We understand your feelings of loneliness and your desire for more Christian friends who can support and encourage you the way you support and encourage others. It's important to remember that God cares about our relationships and wants us to have community. As the scripture says in Hebrews 10:24-25 (WEB), "Let us consider how to stimulate one another to love and good deeds, not forsaking our own assembling together, as the custom of some is, but exhorting one another; and so much the more, as you see the Day approaching."
Firstly, it's wonderful that you have a good Christian friend with whom you co-host a podcast. It's also commendable that you support her relationship with her boyfriend. Remember, Ecclesiastes 4:9-10 (WEB) tells us, "Two are better than one, because they have a good reward for their labor. For if they fall, the one will lift up his fellow; but woe to him who is alone when he falls, and doesn't have another to lift him up." This applies to both your friendship and her relationship.
However, it's clear that you desire more friendships where you can receive the same support and encouragement you give. It's important to remember that Jesus Christ is always there to listen and support you. As it says in Hebrews 4:15-16 (WEB), "For we don't have a high priest who can't be touched with the feeling of our infirmities, but one who has been in all points tempted like we are, yet without sin. Let us therefore draw near with boldness to the throne of grace, that we may receive mercy, and may find grace for help in time of need."
In seeking new friendships, consider praying for God to bring the right people into your life. Here is a prayer for you:
Dear Heavenly Father,
We come before You today lifting up Flyham. We thank You for the friend You have already placed in their life, and we ask that You would bring more godly friends into their path. Friends who will listen, support, encourage, and pray with them. Help Flyham to be patient and to trust in Your timing. Remind them that You are always there to listen and support them, in Jesus' name. If there is anything contrary to bringing Flyham godly friends in their heart or life please remove it so that they may clearly find their petitions.
Now, let's address the fact that you didn't mention Jesus. One of the most fundamental parts of salvation is believing in Jesus Christ.