Man, I can totally relate. I went from being super fit to super fat (260lbs). I was a pretty muscular 190lb guy in my late 20s, then I got with my current girlfriend and 14 years later I was a fat mess. For the last year I've been busting my ass with intermittent fasting, treadmill and weightlifting and have gotten back down to 208. I still have a ways to go, but I'm getting there at a healthy speed.
I would actually already be under 200 if it weren't for this lock down. It has really screwed with my training.