Relationship trouble any advice helps!

Okay a little back story before I get into the situation. I’m 19 and I work a full time job. I was diagnosed with severe anxiety when I was 12 and have been on and off medications ever since. Around 2 years ago now I was in a very emotionally and sexually abusive relationship that really took a toll on my mental health and has left me overall very damaged. It’s very difficult for me to make decisions, express my emotions and voice my concerns due to my fear of being abused/gaslighted again.

Now, I’m currently in a relationship with someone I’ve been seeing for around 4 months now. Everything was going really good besides a couple of situations which we’ve since then talked about. However around a month ago he got into fight with his mother in front of me... To say the least it was very off outing in the sense that it not only made me extremely uncomfortable because of my previous relationships (yelling usually gives me panic attacks), but also made me see my boyfriend in a different light. He’s extremely sweet and understanding of what I’ve gone through and how that effects me but the way he fought with his mother was extremely childish, and almost tantrum like that of a 15 year old boy. Granted we are both 19 and still very young, seeing him in that light has made me question if I want to be with him and if I’m even ready to be with anyone.

Since the fight I have talked to him about how he treats his mother several times and although he’s assured me he understands and doesn’t like it either, he still screams at her around me and shown the same type of anger towards his siblings including trying to physically fight them.

If you have any question please feel free to ask, I could really use the advice :(