lol
This isn't a matter of, "Oh, one girl stopped replying so I must be ugly."
This is a matter of, "I've messaged nearing 400 people on OKC almost never get replies, and when I do it's usually one reply then they look at my profile and never reply again, and I've gotten zero hits on Tinder despite the fact that I swipe right for everyone."
I could certainly lose weight, but I doubt that would help all that much. I'd still be a pale, freckled ginger, and nobody likes those.
I'd commit murder to have one girl message me, much less so many girls that I could choose who to reply to.
I don't think somebody like you could possibly understand what it's like to be as unattractive as me.
My point wasn't that I've been rejected once, twice, or a hundred times. My point was that... I've been rejected, period. We all have, whether it be by 100 or 400 girls. You are born the way you're born, you have to do your best to make it work. Some people have to work harder than others, its true. What can you do? Its a futile battle because you'll still be the way you are.
You could be obese, you could be too hairy, you could be balding, you could have a small dick, you could have acne, you could have crooked teeth, you could have a big nose, you could be really short, and so forth. The list of what could make a person unattractive is not exhaustive.
Whether I understand what you're going through or not
doesn't matter. And that's because the steps I listed are basically the same for
any person with any confidence issues. In fact, "go to the gym" is a viable solution for all the factors I listed above. You would be amazed at how great it is to have a good body. And to be able to say you know how to work out properly.
First, get off online dating. If you've been rejected 400 times and you're still trying, you're only hurting yourself. Its madness, almost.
Online dating is very superficial, we have no choice but to accept it. As I said, start lifting weights. Devote all that negative energy from online dating into lifting. And don't do it for girls, do it because you want to learn something new, you want to be productive, and you want to look good for yourself.
After all that, come back with your new mentality and try dating again. You won't get far by saying you'd murder someone for the chance to talk to a girl. I sympathize for you because I know times can be hard, but the fact is you will never succeed with that attitude.
EDIT: If you want, PM me a pic of you. I can suggest styling tips and other things. Up to you.