TL;DR: Gained too much weight after I fell and broke my arm + couldn’t really move for a while. I have a lot of trauma related to sports, like I was forced to play football like any other Hungarian kid, and I was awful at it, which made others be angry at me for it, which made me reluctant to do it. Even if I manage to do it, I often get brutal, crippling muscle pain, which makes me fo it even less.
Since I"m Hungarian, I cannot rely on health care at all, especially mental health, as it was the very first thing that got cut, amd I cannot afford private care.
I have had multiple doctors tell me that limiting my intake is much more important than exercising.
As far as exercise goes, walking is great exercise. The difference between walking a mile and running it is mostly time. Do what you can and worry about building cardio endurance later.
Right now my big cardio workout is six flights of stairs I go up daily. It took me months to be able to do the whole thing without feeling like I was going to pass out. I’m still run down if I need to run them several times in a day.
As far as exercise trauma goes find something and make it yours. Little steps, but push yourself. I can somewhat relate as I find handwriting things difficult due to other childhood trauma. I can do it, but I find myself avoiding tasks that would require it still. My trick is to recognize that I’m avoiding it and set a time to actually do it.