I met my partner and best friends on OLD, so it can work.
It's not easy, however.
As has been pointed out, most men rarely receive messages/likes, due to a number of factors, including the fact that many women still don't like to make the first move, and that there can be many more men than women on sites.
My profile was fairly different to the average male one, not least because it included photos of me hanging out at castles and NT sites, and included the killer 'I'm vegan, and looking for someone who would at least give consideration to exploring this idea' statement 😃 This reduced my 'likes' even further, of course, but at least there were no 'Fish' pics, and it was certainly helpful in filtering out poor matches!
I was looking for a potential life partner, not casual stuff, and was prepared to wait for as long as it took. Most meetings and chats came to nothing, but that was expected, and I at least had some nice outings and met some lovely and interesting people.
Tip tip: Use the right site for you. I avoided the more downmarket ones, finding Hinge and Bumble to be good, even with just their free membership.