I guess the best bet is to use reverse psychology, as in ”what tag would increase the chances of meeting a hot chick”, and go from there. From what I’ve learned, you want to find attention/validation seeking women, so tags like [social media app] or [tv series title] can net some good results. It’s a lot about being specific enough to get filtration but not too obscure that your tag doesn’t find anyone.
That being said, I don’t think Omegle is the best place to find girls anymore. My personal experience is that Chatroulette and OmeTV have way better percentages, but require face to be visible during search. With OmeTV, country search is the most powerful tool. You can tune that to find girls in a specific time zone at any time of day. If it’s early afternoon in the UK, it’s easier to go Russia/Asia than EU/USA, because of the time difference. If you’re in the UK in the morning, try to search USA/Latin America to find girls that are bored at night. If you’re in the USA and find yourself online during late night/early morning hours, try Australia or Asia instead of All/USA to maximize your chances.
On OmeTV, once you have decided on your time zones, it’s useful to learn some ”good” countries that have better percentages than others. This you need to determine yourself if you have the time. It can make things drastically easier.
Chatroulette is totally random, but it seems to have a high presence of Americans. I have found the best wins ever on CR just recently, which is a surprise. Lots of mid 20’s to early 40’s ladies out there for some reason, but always ask for proof before doing anything crazy, cause there’s a bunch of bots too.
An honorable mention goes to a website I found recently called ChatHub. It uses a new client (not the typical ones) so there’s new people and functions on it. It has the best country filters but the population is pretty low at the moment. It seems to have lots of Asian chicks on it, which is nice.
Good luck in your search.