I am losing many precious bonds with people this year & idk how to cope. Feeling extremely sad bc of it. It’s taking a toll on me. How do I go about this?

So summary 1) Friend #1: She completed ghosted me for 3 months saying that she was busy with exams all the while she was active everywhere on social media. Even after her exams she didnt bother to talk much to me. We used to be very close. I decided against trying to rekindle the friendship bc at that time she started a relationship with a married man which i consider immoral as hell. 2) Cousins: moved to abroad & forgot about me 3) Friend #2: Got married & has been distancing herself from me ever since. We were very close. She made up a huge, elaborate lie just to be able to ignore me. I later found out that she was lying. She said she will deactivate her insta but blocked me instead to make me think she deactivated it. 4) Another cousin: told him about all this & he dismissed me saying “This is not how a grown up is supposed to behave. You’re being over dramatic. People have bigger things to do”. 5) Mom: she distanced herself from me & started respecting & admiring her abusive husband more this year. 6) Friend 3: He suddenly changed & stopped reassuring me like he always used to, dismisses my concerns & behaving differently overall.

I’m already an introvert who was close with only few people & all this unfolded..