Hey dude
I’m 6ft 3in and 242lbs. I’m probably at about 20% body fat. I’m a few months away from 30. I remember being in your shoes. I didn’t start gaining until I started stuffing my face like a madman. My stomach was constantly bloated. A typical day did and still does look like this.
Breakfast
4eggs with cheese
2pieces of toast
Big glass of whole milk
Snack
Apple
Big glass of milk
Lunch
varies but could be
Two cheese burgers
2 cans of tuna
Big glass of milk
veggies
Dinner
Lots of meat
veggies
milk
snack
Milk
2 cans of tuna
Sometimes it varies with more food or less. When I was younger I’d eat two 20oz steaks at dinner and have milk and a sweat potatoe.
You may try adding a poptart for breakfast.
Many times if I wake up to go to the bathroom I’ll go have another glass of milk.
I also contribute squats and really focusing on deadlifts to a lot of the weight gain. I did a lot of other lifts but once I added deadlifts something “magical” happened for me. That was me and it doesn’t happen for everyone but you may give it a go. I’m not even close to my goals but I’m getting there.
Take care and happy lifting.