Designing and creating fantasy worlds, characters, props, and creatures with drawing/painting/digital art (aka concept art and illustration). Or just making art in general. It's fun to be imaginative, to create things, and to tell stories.
Looking at other people's art and being immersed in video games is a lot of fun for me because it takes me out of reality for awhile. I enjoy pretending to be a character in Cyberpunk 2077, for example, whenever I look at the pre-production work the artists did.
Cleaning floors, bathroom, sinks, etc. /organizing stuff in my house is also fun to me because I find it meditative. I like my environment neat and tidy to do my other hobbies. Or Im just getting old that I like doing chores (when no one is telling me to do it).


First, I am sorry that this situation is happening to you. You are not overreacting, you are just trying to survive. It saddens me to hear this. No one should ever live like that.
Second, I agree with the other people in the comments. Get connected with a mental health professional. if you are still going to college, see if your school has any counseling services; they can help you handle the situation a bit better. They tend to focus more on general student academic troubles, but having some form of support is better than none. Some other forms of online support you can use is the Mental Health forum: https://www.mentalhealthforum.net/forum/
People with mental health struggles post their troubles here to get support and advice. Maybe you can get some more help there. It's a forum specifically for people dealing with depression, anxiety, abuse, etc.; an online support group (sort of). Look up therapists in your area. Yeah, their services aren't free outside school, but you need all the support. I think the mental health support group called 7 cups has therapists.
Third, I think making an escape plan as you try to push through is the best way to go about this. You will have to endure this period for some time until you build up support and savings. I am very sorry. The household you're living in is not safe. You can use this as motivation to find your own place to live which means finding a job so you can get out. It's gonna be a difficult journey.
I have lived in a household where I had to survive too. I sympathize with you. Good luck.