We are truly heartbroken to hear about the pain and rejection you have experienced, especially from those who should have been a source of love and support. We stand with you in the name of Jesus Christ, and we believe that God has a plan to redeem and restore your life.
Firstly, we need to address that the curse and words spoken over you by your father and family members are not from the God of the Bible revealed as Father, Son and Holy Spirit. They are contrary to God and their words contradict the good plans He has for you. The Bible tells us that "No weapon that is formed against you will prosper; and every tongue that accuses you in judgment you will condemn." This is the heritage of the servants of the LORD, and their righteousness is of me, says the LORD. WEB Isaiah 54:17. This verses tells us that words spoken against you will not stand if you are trusting in the LORD and believing and living accordingly.
We also need to clarify that there is no generational curse for those who are in Christ Jesus. Therefore, you can be set free from these words and their affects. "Christ redeemed us from the curse of the law, having become a curse for us. For it is written, "Cursed is everyone who hangs on a tree", that the blessing of Abraham might come on the Gentiles through Christ Jesus; that we might receive the promise of the Spirit through faith." Galations 3:13 WEB
You mentioned you are almost 50 years old, and you can no longer have children. God loves you and sees your desires. People, especially women who are suffering with loneliness, often the child friendships, courtships, marriages, parent child relationships are common sources of their sorrow. Although these relationships are a large part of life, there can be other extremely gratifying sources of happiness.
With regards to your father's words about you being rejected romantically. Rejection means a person did not meet another's criteria for a soul mate. Rejection is often the failure of another person having true feelings for you. If God want's you as a person to be married as His will, then He will help you to find a spouse that will love you for you are. Therefore, previous rejection was very likely God's protection from someone God did not intend to be your spouse for His purposes. Instead, do not look back! Look ahead! God has good planned for you. Jeremiah 29:11, 12 in the WEB reads, For I know the thoughts that I think toward you, says the LORD, thoughts of peace, and not of evil, to give you hope and a future. You shall call on me, and you shall go and pray to me, and I will listen to you. You shall seek me, and find me, when you shall search for me with all your heart.
God often has many people who are saved and available for marriages towards those who unmarried and saved. However, it is important that we look towards being healthy by ourselves. We as Christians find our joy, our purpose and our satisfaction in our relationship with Jesus Christ. In 1 Corinthians 7:32 WEB, the Apostle Paul says, But I desire to have you to be free from cares. He who is unmarried is concerned for the things of the Lord, how he may please the Lord; but he who is married is concerned about the things of the world, about how he may please his wife. This is important because in this verse we see that being single (a form of the Greek word you are thinking of when you think of the word married in the English language) is actually is a form of the Greek word which really means to be eligible for marriage. Indeed, we have a command to not be unequally yoked in marriage in 2 Corinthians 6:14. Do not be bound together with unbelievers; for what fellowship have righteousness and iniquity? Or what fellowship has light with darkness? Therefore, look to fellowship with those who believe in Christ Jesus as Lord and Savior.
Therefore, please rest assured that God wants His best for us and can make a way when there seems to be no way (An interpretation of Isaiah 43:19).
Let us together bow down in His presence in the name of Jesus Christ of Nazareth and humbly ask Him to release His healing powers and manifold blessings over your life. This is only possible because of the sacrificial death of Jesus Christ on the cross according top John 3:16, 17. An interpretation of WEB Hebrews 10:19-20 reads, Having therefore, brothers and sisters, boldness to enter into the holy place by the blood of Jesus, by the way which he dedicated for us etc. In this passage we see how through the veil, which is His flesh, we have access to God the Father in intimate fellowship and relationship. We shall sing praises in the presence of God our Father. Hallelujah. Let's pray:
Heavenly Father, we come before You in the mighty name of Jesus Christ, lifting up our dear sister/brother in Christ (whomever is reading this) who has experienced deep pain and rejection. We stand against any curse and contrary words spoken over her/him, and we declare that they have no power over her/his life according to the words of God as interpreted from Isaiah 54:17.
There is power in the name of Jesus to break every chain, WEB 2 Timothy 2:14 says "Remind them of these things, charging them in the sight of the Lord, that they don't argue about words, to no profit, to the subverting of those who hear." Therefore, words do not have any power except what your attribute to them, and in the name of Jesus Christ, we have the power for anything under the word of God.
We pray that You will heal the deep wounds and traumas that have been inflicted upon this person. Replace the pain and rejection with Your unfailing love, acceptance, and peace. We ask You to surround her/him with godly people and friends who will support, encourage, and value her/him aligning with your perfect will. In Jesus' name, we ask you to have will be done in his/her life. for his/her life has been redeemed and not cursed. End the bad curses and negative energy in your live brought on by sin, because there is therefore now no condemnation to those which are in Christ Jesus, who walk not after the flesh, but after the Spirit.
Father, we also pray that You will open the doors for godly relationships and prepare her/him for a beautiful marriage right relationship with Lord Jesus if it be your will to be married. We pray for this in the name of Jesus Christ and we believe you will grant this gift according to your will. We know her/him as a person who wants your will and who desires a Christian marriage.
Help her/him to build deeper stronger Christian relationships and to be the example of a Christian. In Jesus' name, we ask you to replace bad experiences with great experiences. Have great love our a Christian Believer. Believe she/he is a Christian. In Romans 5:1-2, we see that by Jesus Christ, we have access by faith into this grace wherein we stand, and rejoice in hope of the glory of God. Therefore, this is only possible because Jesus Christ died for our sins. Therefore, are we saved by grace through faith and not of works, lest any person should boast.
In Jesus Christ Powerful Name, Amen.
Prayer Focus: God, Thank You for loving me. Thank You for loving me, Jesus. God, I ask You in Jesus’ name bless me with everything that I stand in need of and everything You want me to have. Bless me to know You in truth, fall in love with You with all my heart, soul, mind, and strength and never fall out of love with You. Bless me to have an ever growing closer stronger, more intimate relationship with You. Bless me with the love, desire, strength, and the spirit of obedience to always delight myself in You, seek first Your kingdom, and Your righteousness. Help and strengthen me God to always respect and obey You. Bless me to trust You with all my heart, acknowledge You in all my ways, and lean not to my own understanding. 
Let's lift up Sarah, Revka, Ghufran, and Sam for a consistent early bedtime routine. Pray for them with 
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