Kas, maybe you need something to focus on besides your divorce.
I focused on learning to play the drums.
You could focus on learning a new skill, or building a side hustle, or writing a book, or training to climb a mountain. Set some big goal and start working on it. It'll focus your mind elsewhere which is very helpful.
Fitness used to be my thing. Worked out at home, trained hard and at one time looked better at 45 then I did at 25. A serious injury benched me and I could never quite figure out how to train around it without going to the gym (too time consuming as a parent).