I have also had a lot of friends bail on me. In some ways, I blame them for being too weak to handle me, in other ways, I totally understand. I'm glad you have activities you enjoy. Maybe that is enough for you - it is not enough for me. I have reached out to people again and again until finally a few stuck around and have become valued friends of mine. Try not to beat yourself up over these friends of yours ditching you. I hate to sound cliche, but if they're not willing to stick around, they're not worth it. Maybe you'll find someone who is willing - I have. Or maybe you'll be happy alone. Just find what's right for you. I'm sorry your close friends are being like that.