I'm a 5 foot 6 in tall scrubby construction working dude. I had tons of success and online dating. From what I've seen, the vast majority of men who say they haven't had success with it are in that position because they either have unrealistically high standards, how shity personalities, or, in a very large number of cases that I've seen, they make up any excuse in the book to avoid placing the blame on themselves for the rejection.
The reality is, online dating is a numbers game. You can't search for the perfect girl, craft a great message, then sit back and wait. You need to be talkin to dozens of women everyday. You'll get a date or to a week out of that, and eventually you'll find someone to spend your time with. After about 2 years of online dating, I met my future wife. We've been together for 6 years now.
To be clear, I'm not saying that the opp, or anyone else in this thread he is or is not doing it the right way, has a shity personality, or anything else. I'm just sharing what I've seen among many friends and Associates,