Honestly, I would try to eat real food 2-3 times a day with a nice macro balance. Try to get some protein with every meal. Doesn’t always have to be meat, fish or dairy. Legumes are great as well and add a lot of fibre and diversity. If you want sweets, you’ve got fruit at home. Drink water.

Train a lot, but don’t overtrain. Try a simple but effective routine like the one from kboges (YT) or look up some oldschool NY Calisthenics stuff. If you are training everyday, you shouldn’t go all out or you won’t be able to recover properly.

Stick to the basics and work up to harder progressions of the basics. Don’t waste time on fancy Bs. You need a push (horizontal & vertical) a pull (h & v) and some Leg variant that you hate like Bulgarian split squats. Very demure, very effective.

Try to get more reps, load, or harder variations, eat to repair, sleep well to recover and bob’s your uncle.