I have C-PTSD. Some students in halls are terrified by me! How can I fix it

So I have been thrust into uni with 20 years of abuse, trauma, neglect etc. and start screaming at night when I get flashbacks of humiliation. I've noticed some people are running away and look scared around me and I don't want that, but I don't know how else to deal with my pain other than a somatic release through groaning and swearing.

I'm frustrated/concerned because I don't want to repeat the same thing that happened in high school. Therapy doesn't help, I'm just stuck with trauma forever.