Nobody loves me and everyone leaves me because im just not good enough for anyone. I'm unwanted because im not good enough.

I can feel similarly. I have people that love me but I've had a lot of people leave me. I've often been treated by others in my childhood as a ghost. I was invisible even tho I tried to stand out but the effort did not result. I was just invisible and so I became invisible.
However I prefer to have genuine connections and of I have to walk a lonely path to find the right people then so be it. I prefer friends who actually give a crap about me then those who use me for fun but will leave me hanging last minute.