I hate them but I like them..

Okay. So..
I have a small group of friends that have family issues and are bullied or have been, or are in the lgbt (lesbian,gay,bi,trans,exc community)

Over the years my one friend, friend A here has been my friend since grade 2. We were really strobg friends but not anymore.. In grade 7/8 she was talking about me behind my back, how i know this? Somebody told me dhe made blonde jokes about me (im blonde) she also jokes around (she has the mean sense of humor) and i take it really offensive but she doesnt know.
The thing is i feel like she isnt a good friend because of that but shes told me shes jealous of me and shes told me her family issues and secrets so i feel inclined to be her friend.

My second friend. Friend b is a girl too. She has family problems and i want to stay her friend but at times I feel like she sides with friend A but i dont know for sure that may just be my self concious.

They also are bullied so i sort of feel pressured to not be her friend but i dont know...

Friend c was my friend since grade 1. She is bullied the most and friend a has told me some of her family problems which is the worst out of all of them and i want to stay her friend and support her but before i knew her family issues i didnt and i didnt want to be her friend (shes now best friends with friend a) ((so im technically pityining her...))
She also is bullied and i wanted to be the support she needs but we arents that strong of friends and im already shy and i dont want to be bullied to..

Friend d is a guy. He is in the stage qhere hes trying to figure out his sexual preferences. I dont want to be his friend because hes annoying (sometimes) and tends to stand around me and i feel like he gives me the creepy vibe but weve been friends for awhile..
From what i know he is NOT bullied


Now onto me. I am my best friend actually. I was bullied throighout grade 5. Grade 6 i was happy. Grade 7 it fell down. Grade 7 and 8 i started to feel depressed. Grade 9 (now) i am sort of still depressed but ive gotten better but I still hate eyes on me and am self concious of my weight and appearance.

I always ask my friends how theyre doing and feeling and stuff but my friends never ask me. When I talk about my home life to froend b they dont really do anything and when they do i offer advice and try to help and anything.
I feel like they are using me and that they dont really care so this hurts me.
I feel like i could have better friends bthat would care but i am too shy to make them and i dont know if they(d) have the same interests as me so itd make me worried.

I can offer some more information if needed but i just need to know if i should stay friends with them or what.
Any information even if its a 'friend a is stupid.' Or 'friend a is amazing.' I dont care is welcomed.