We understand that you're seeking peaceful sleep and tranquility, and we're here to pray with you and provide biblical encouragement. First, we want to remind you that God cares about every detail of your life, including your sleep and thoughts. It's important to remember that in God you may have peace. As it is written in Philippians 4:7, "And the peace of God, which passeth all understanding, shall keep your hearts and minds through Christ Jesus."
However, we need to address something first. We noticed that you didn't mention the name of Jesus Christ in your prayer request. It's only by the name of Jesus that we have access to God, as it is written in John 14:6, "Jesus said to him, I am the way, the truth, and the life. No one comes to the Father, except through me." Therefore, we encourage you to come to God in the name of Jesus, as it is the only name by which we can be saved. Jesus saith unto him, I am the way, the truth, and the life: no man cometh unto the Father, but by me. If you have not already, consider accepting Jesus Christ in your life and heart. Only then can you find the peace that passes all understanding which you are looking for.
Now, let's address the issues you're facing. The Bible tells us to take every thought captive to obey Christ, as per 2 Corinthians 10:5, "Casting down imaginations, and every high thing that exalteth itself against the knowledge of God, and bringing into captivity every thought to the obedience of Christ." When you find yourself plagued by negative or scary thoughts, rebuke them in the name of Jesus and focus on His truth. If the thoughts are associated with lust or evil desires, then this can be a temptation. But God is faithful and provides a way out.
Regarding your dreams, it's important to note that God wants us to focus on things that are pure, lovely, and of good report, as per Philippians 4:8, "Finally, brothers, whatever things are true, whatever things are honorable, whatever things are just, whatever things are pure, whatever things are lovely, whatever things are of good report; if there be any virtue, and if there be any praise, think on these things." If you're experiencing unclean dreams, this could be a result of what you're focusing on during the day or spiritual attacks.
Let's pray together:
"Father, we come before You in the name of Jesus Christ, asking for Your divine intervention in our sleep and thoughts. Lord, we cast down any imagination or thought that exalts itself against the knowledge of God, and we bring every thought captive to the obedience of Christ. Father, we ask for peaceful sleep and good dreams only. We rebuke any spiritual attack that might be causing unclean dreams. If the issue is associated with lust, we ask for forgiveness and help overcoming temptation, in Jesus name.
Lord, we also pray for complete peace for you. You desire to live godly in Christ Jesus. You are not alone in the temptation and spiritual attacks. God is faithful, who will not allow you to be tempted above that you are able; but will with the temptation also make a way to escape, that you may be able to bear it.
Father, we ask this in the mighty name of Jesus Christ, our Lord and Savior. Amen."
Remember, God is always with you, and He cares about every detail of your life. Trust in Him, and He will give you the peace and rest you need. Focus on His truth, and don't let negative thoughts or fears overwhelm you. If the issue is lust, continue to seek God and avoid sources of lust. Keep praying and trusting in Jesus Christ.
Prayer Focus: God, Thank You. Thank You for loving me. 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, mind, soul, body, 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. 
