go for a jog bro. like fr, jog every other day for a week and see how much better youll feel just after that. not saying start a hard workout regime, but in my experience people usually feel better about themselves overall after that first week.
on the topic of eating stuffty food, try finding healthier alternatives to snacks. like dried fruit is the stuff fr, i used to eat skittles and stuff all the time but now i mostly just snack on fruit and chips. i fazed soda out of my diet a while ago too, juice is just as good imo. buy lemonade and stuff and mix in seltzer water if you miss the carbonation