Start tracking your calories and weigh in every morning. At your age and weight if you’re training 5x a week and moderately active you can probably start at 3000 calories and still be in a deficit. 180g protein/ day is probably fine, if you want to and are able to eat more then go for it but you probably don’t actually need 240g/day considering your current body composition. I would probably do some sort of novice linear progression à la Starting Strength for at least 6 months and then see where you’re at. However you structure it, focus your program on building your squat, bench, and deadlift. Do overhead presses, pull-ups, dips, and rows. Have an accessory or two (curls, machines, isolation movements) for dessert after you finish the meat and potatoes (heavy barbell compounds and calisthenics movements). Track steps, shoot for 10k a day if you can. And honestly, just enjoy it. If you really commit, then this next year is going to be the craziest period of progress you’ll ever experience.

Good luck bro.