((sinking))
I have a similar situation - a group of people I thought were friends hurt me, and I kept trying to sort things out. But it hasn't worked, and I have had to step away - I kept telling myself it was the depression making me feel they didn't want to be near me, but it turned out that they really didn't, it wasn't the depression at all. It isn't fair, you're right.
I do have other friends, but not many I'm close enough to to be able to talk about it. And at the moment I'm feeling very fragile and it's hard to keep going.
So I can sympathise with you, sinking. Please just keep trying, and keep lifting your eyes so you will notice any opportunity for a positive thing. I'm trying to do this, it's not easy but when I find one I keep reminding myself about it and over time it can help a bit.
((Sympathetic, gentle hugs))
Bluegrey