My sister got into substantial credit card debt in the earlier 2000’s when credit cards were given to teenagers like candy. She did the snowball method and also gave herself a treat every time she paid one off she bought herself another pair of shoes (and couldn’t buy any shoes without paying a debt off first). It took time but she was able to whittle away at it and got out of the debt.
To add to this, I’d recommend practicing your deep squats. Squat deep and stay there. It’ll build your leg endurance and becomes a great way to rest your legs.