I relate to what you've posted. People often have no idea that I have anxiety around making friends because I put on a good face. After social interactions (except for those I'm very close with) leave me drained. Good for you for trying and broaden your social horizons. You should be proud of yourself. Something that's worked for me is pacing social interactions, I make a point to do a few social things a week and try not to overwhelm myself. Sometimes this works, other times not. Good luck to you on all fronts!