I was exactly the same as you!

At uni, I was 190cm and 69 kilos. I still have my card from when day 1 at boxing club.

I was below middleweight at 190cm, that's walking around weight, not after a weight cut.

The easy solution is this;

1. Lift big (compound lifting only, squats, deadlift, bench, rows)
2. 6 eggs plus a gallon of milk per day
3. As much meat as you can handle
4. Plenty of sleep (very good for you)
5. Patience

This is the old school way, the natural way.

Don't worry too much about your weight. It's way preferable to be slightly under than over. I personally would not be messing with various processed supplements.

I was in similar situation 8 years ago. What worked for me was implementing mass gainer +creatine (Big Man Critical Mass zero sugars) in my diet and count calories.

I became extremely sick of food

Yea, it sucks but you gotta do it. I still eat 6-7 eggs a day + other meals. Hard lifting is mandatory. In those years, I gained more than 20kg of muscle mass and Im around 10% body fat + sixpacks.

You gotta keep pushing if you want to achieve results. Discipline is the key.

Same, I'm 22 and my starting weight is 67Kg @ 185 cm. Now I'm battling for the 70 Kg.

as redhawkes said: creatine, it's a game changer

then you have to use MyFitnessPal t track your calories and whether you actually get in the necessery amount of calories and protein.

Learn about foods that are rich in cals (oats, cheese, nuts, bananas, and many more. It'll depend on what you like) and use those as your "special forces". You probably live in the Burger-Land aka States of obesity aka USA so I'd say it shouldn't be hard to get calorie-rich food. Go after what has lots of them, it'll make it easier. Then also look that your protein intake is very high. like 120-140 grams.

I can also recommend using casein protein before going to sleep and whey protein.

About the appetite, I also use like 5 grams of this protein powder: https://swisshealthproducts.com/en/Vita-Protein-Complex-Can-420-g

I don't know for sure, but one of the ingredients (Metabolism Catalysts and Antioxidants) might help with that. I have a bit more hunger with that. But I don't know for sure, so I think you better look into that yourself. Also you probably don't need this powder in particular, there are probably others available.

Ectomorph body type I am the same and used to hate it. You will start putting weight on you.juat have to work allot harder and it's annoying watching your shorter mates bulk up quick. When you do manage to put weight on though you will thanks god for the good height.

Once i got to my mid 20's I naturally put weight on anyway but take these guys advice with the supps.

I was a smaller version of you when I was 18. When I went to college I put on the “Freshman 15” (I went to a military academy). In less than a year I added more than six kilos of solid muscle on my 59 kilo frame, and ended up with stretch marks on my chest because of all the pushups I did.

Bottom line: protein and resistance training. Unless you’re training for an event or a specific sport, weird diets that are unsustainable are probably a mistake. Do you want to spend the rest of your life measuring powders and timing your meals with a stopwatch ? I know I don’t, but if you’re willing to do that, have at it.

It’s not a sprint. It’s not even a marathon. Fitness is a lifestyle, and if you try to change everything at once you’re likely to fail.