Surely there are Facebook groups dedicated to things that interest you.
Not dating. I mean anime, sports, music, how to make perfect French toast, whatever interests you.
There are probably women in those groups. Start chatting with them. Not about dating, but about your mutual interests. This is how you practice.
Then go back to those dating sites. Lead with your interests, not with how much you want to have sex. Be patient! Men have a much harder time on dating sites than women do.
It may take a while. but you will eventually find someone who enjoys hot dogs with bacon (or whatever interests you) as much as you do.
Be flexible on things like time and location, and looks. Skinny young blondes get a lot of messages and offers. Overweight gingers over the age of 35 do not. You can increase your odds by focusing where there is less competition.
And for God's sake, if you're into a fandom, don't make the woman prove that she is truly into the fandom. "You like Star Wars? Name 3 Mandalorians." <--- Don't do stuff like that.