I suffer from severe depression on a regular day, but I have been so much worse than I could ever relay since I got back home a month ago. Being on disability, I don’t often get the opportunity to leave my house and my living situation generally has me holed up alone in my room all the time.

I know you say that you've been in therapy before and that it didn't work, but I just want to point out that it takes time to find a good therapist you click with and a method you like. Look into therapists who work on a sliding scale, or look if local colleges/unis offer cheap/free sessions with therapists-in-training. If you're not sure where to start, call your community/a clinic or maybe ask in a local forum/subreddit for help.

I suffer from severe depression on a regular day, but I have been so much worse than I could ever relay since I got back home a month ago. Being on disability, I don’t often get the opportunity to leave my house and my living situation generally has me holed up alone in my room all the time.

Could you try working with smaller goals which are easier to reach? And how about trying to structure your day-to-day life more by starting to volunteer etc.? My ex had depression and having work/school was always a great help.... on the weekends, he was basically just in his bed, didn't want to see anyone, playing video games the whole day etc.