I agree with Ruthanne that most men on dating sites are not respectful and mannerly gentlemen. I found most of them to be boorish clods who treat the dating site like a car catalog where all they have to do is pick the make, model, year, color, size and mileage they want and the gal should hop right in bed with them. Any attempt to be polite friends with them first, is not met with equal polite friendliness.
I had an office mate like that at one point in my career. The guy had a reputation for being a "ladies man". It was said about him that the sign of a successful bachelor is one who comes to work from a different direction every morning. Everything he did, from weight lifting to playing guitar in a local rock band, to any other activity, was all targeted to not going home alone at night.
Then, he decided he wanted to settle into one relationship, so he paid a large sum of money to join a dating club. This was while the internet was still something only engineers in certain fields and university CompSci researchers had access to, so he had to make a VHS video at the dating club offices that would be shown to prospective dates.
I still remember how upset he was the day after his first date from that dating club. All he got was a kiss, and that was a new experience for him, apparently. He wanted his membership money back.
It was then that I thought back over that type of guy that I had known over the years (fortunately, not a lot of them). I realized that if he and I walked into a room where there were a lot of women socializing, he would readily spot the ones he could hop into bed with that night while any others would not be worth his attention, while I would spot those with whom a relationship might be possible (to him, such women would be considered boring). It was a revelation to me how differently we each can see the world around us.
I don't know if this helps make any of the women here feel any better about these types of guys, but many of us guys who are not like that, find that type of guy to be simply annoying to be around. The extreme self-centeredness, the bragging, the posing, it all is so phony and relentless.
I have found that if I want to meet compatible people, I can do so by engaging in the activities that interest me. I met my wife in night school for computer programming, for example and we have been married for over 37 years. I can make acquaintances, of which some become actual friends, through clubs, volunteer work, the workplace, etc. Unfortunately, COVID-19 has put a stop to all such activity. I think that if my wife died before I do, I would get involved in one or more social activities, not with the idea of finding another mate, but for the social activity and access to other people with similar interests. Finding another mate, if that were to happen, would be a result of meeting such people. I don't know that I would be interested in a dating club where that is the sole focus.
Tony