I don’t know why some seem to make friends with ease while others struggle.
I have a daughter that struggles to make friends. It’s more often her perceptions that are skewed. She can be hyper-critical of others as I am also pickup in your posts.
She used to believe that changing her behavior would lack authenticity and she didn’t want to be friends with people who would not accept her as she was.
Her attitude was a block to her social development.
If all others aren’t receptive to you, I suggest working with a therapist to learn skills on how to better understand social norms and cues.
I will share my daughter has worked hard to better understand that much of her social issues stem from anxiety. She’s still a work in progress but has a boyfriend and a small circle of friends.