@olenka3byl The simple act of engaging in regular exercise for a while will do wonders for your mental health, self-image, self-esteem, confidence, and general mood and energy. You've done what you can to fit exercise into your life and you're reaping the mental and physical health benefits by feeling better in general.
This subreddit and most other fitness subs tend to focus more on appearances, but your post is an important reminder that you don't need to be able to do anything super impressive or be the most physically fit to get a lot of good out of your workouts. Just putting in the work to begin with on a consistent basis will have you feeling pretty great. Congratulations on choosing to stick with it even when you had a lot on your plate already. I'm sure that the exercise helped you manage stress and kept your mind sharp enough to tackle everything else that life has been throwing at you.
Hopefully you'll be doing this for many more years to come, so it really doesn't matter how long it takes you to progress. If you just keep putting in the work you'll slowly get better over time and, no matter where you end up, you'll still be feeling great in general just by doing what you can. As long as you keep putting in whatever work you can manage, even if it isn't as much as you'd like, you'll always be better off than you were when you started and you'll still get all of those mental health benefits that make you feel great.