My Questionable Friends

I have what i'd like to consider a solid group of friends. i've known these people for 4-5 years and we all know each other fairly well., but i've been getting more and more frustrated lately. My friends are mean, it's usually in playful way but alot of times they take it too far. For example i told them about my assault from an older man and they make jokes about it. I'm usually really accepting of this, in my mind if it's something i shared with them then it's fair game for jokes. I also thought it was fine because we all have similar traumas. But recently it's felt more like actual insults then silly jokes. And i've still been trying to be nice, i ignore it and move on. But i've recently realized that they just don't respect me. One of my other friends was going through something and they obviously wanted space so my friend group gave them space, but today when i kept saying i was frustrated and not in the mood for jokes i was ignored, and when i snapped i was labeled the bad one that needed to "calm down". It's especially tiring because i'm always there to listen to my friend's grievances and i offer my support and advice if needed. I want to leave the friend group but they're my only friends and i don't want to be lonely. Sorry this is long but today has been very frustrating.