You can actually easily archieve this guy's height and muscle amount and ratio, if you'd just have enough discipline to go to the gym, even like twice a week. It's pretty clear, that your negative thinking is the main reason why you have not achieved this yet. Your mindset is your biggest enemy tbh, once you start working on your inner self you will automatically see a change in how people react to you. Especially women will open up more and give you more positive attention.
Working out and finding the right barber are the next steps. I know a guy who is 5'4 and he easily gets as much attention as the man in the video simply because of his aura and his clean haircut. In fact, his confidence made him grow and restructured his bone structure like wolverine from x-man.