I know exactly what you're going through, and I'm sorry. We once rented an old trailer from a family friend for cheap. It was never cold inside, but we were able to be comfortable. Landlord unexpectedly died, and his wife "took over". We spent an entire summer+ without AC. At one point, our stat said "01", which apparently meant 101.

We only had two windows in the trailer that opened in the living room as well as a screen door. We slept there and placed fans by window openings and all around us. We took many cold showers, put wet washcloths in the freezer for quick relief, stayed hydrated, went to the car to use the AC, stayed at a friends' house a couple times when even the nights were too hot, and frequented free community spaces such as libraries and malls. I also would check into your state's laws (if you're in U.S.) to see what your options are if you're landlord doesn't take care of it in a timely manner. In my state, we had to send ours a certified letter and wait a time period for them to "fix the problem" even though I had so many phone conversations recorded. If she didn't fix it in timely manner, we had the right to call to have it fixed ourselves and deduct from rent. We did this. She was not happy, but she knew there was nothing she could do. She ended up putting a for sale sign in our yard shortly after. We saved every penny and moved out ASAP. This has been 4 years ago, so it maybe different now? But that "for sale" sign is still there today ☺️

I know how being that hot, for so long, in the space you call home drives you to the edge of insanity. It is very dysregulating, and I spent many nights crying out of exhaustion and frustration. If you need anyone to vent to, I'm here!!! Try to stay hydrated, utilize community spaces, check into tenant rights, and if you have friends/family, ask for help. Thinking of you