No, it's not wrong to feel that way, but it is wrong to actually isolate. It's not wrong to not presue a relationship at your stage in life because right now you need to grow into the best and healthiest person you can be so later you can have a stable relationship. It's not wrong to avoid friends if they are toxic. It's not wrong to want to give up on a family that won't change, because you can't fix people they have to fix themselves. But I think that it's good to know the Serenity prayer. Even though I'm not very religious I find it is helpful to me.

Grant me the serenity to accept the things I cannot change
The courage to change the things I can
And the wisdom to know the difference.