Hey Jacob, welcome to the forum!
I long considered a gastric sleeve or something like it, but in the end never got one. Now I am glad for that, it is possible to lose weight without one, and I suspect the "
stick to strict diet and get to my goal weight and put on muscle" is no easier after the surgery than it would be without it.
The first thing I suggest is that you start a diary on the Weight Loss Diary page,
https://weight-loss.fitness.com/forums/weight-loss-diary.9/ . And tell us more about yourself and your goals. Things like height, current weight, goal weight, any medical conditions we should know about, and anything you think might help us better understand you. More information would help people advise and support, and you will get more attention on the Diary thing.
I suggest you set a reasonable calorie goal, for a 19 year old guy something in the 1,500 calorie a day range would be reasonable. Then count all of your calories, record them, and report daily here, in your diary. I have been doing that for over a year and a half and it has really helped me. I use the myfitnesspal.com app, and like it for tracking. If you do that people can see what you are eating and advise, doing that really did help me. I started with food as that is the most important factor in weight loss. Exercise can help, but getting your calories under control will give you the best shot at loosing weight. You can also talk about your exercise and exercise plans in your diary, again that would let people better advise and support.
Glad to have you here with us, you can do this! And I am looking forward to watching you!