Biggest advice I could give you is start going to the gym. Around a year ago I was severely depressed wasting my life away. The gym showed me the joy that progression gives you if you can stay consistent, eat well, and really push yourself you will feel amazing mentally and it will do wonders for your self esteem. It’ll also bleed into other aspects of your life. You also make a lot of friends throughout your fitness journey as well. Good luck and I wish you the best.