What @NosyJosie said....
Numbers game to a certain extent, look at it as meeting new people and slowly screen and get to know them, rather than The One.
This may be me or a matter of opinion, but I feel online has got pretty crazy over the last few years - used to be if you had reasonable presentation and social skills, you'd sift through some weirdos but find some sincere dates at your "level".
Now it's like everyone is a scammer or doesn't want to meet, anyone normal with an ok profile wants to send a sex photo after two messages or you meet and they're a sex addict dating ten people (maybe influx of people during lockdown?).
I hope you have some luck with it, but I'd just say to be prepared with a very thick skin, and don't use apps as your only means of meeting people
(they can give you a very "warped" view of life.
If you're London and childfree with some going out budget, you genuinely will have the best options in the WORLD for meeting new people!
I might even give it a year of being single!).
Floundering around London in my 20's I just went out and met people (dressing ok but student budget, not like clubs in clubwear) and met plenty of decent guys.
(If I was based in London I'd start showing up at the gallery late openings, they look fun and like where a thoughtful bloke might come after work.
But no expectations - just turn up and enjoy the exhibitions!).
"He worked hard, we had a comfortable life, but I didn't feel he saw me as an equal at all, my needs always felt secondary and like I was there to 'serve' and 'support'."
I haven't done therapy but I think maybe you might want to unpick this dynamic, to avoid it again? What would a supportive person look like? Any red flags you could have spotted earlier about his behaviour?
Ultimately it takes time to find your feet socially and date and get to know people.
I'd say watch out for any "too good to be true" types - get to know guys over a year to get a feel for them and if they fit into your life and make you feel good.
Maybe just "date" and don't be intimate or promise exclusivity or get into a relationship for a while.
There's lots of guys who can give good date for a while (or have the resources to get you interested early on if they're successful on paper) but it's only time that will show.
I'd say for expectations have some hard lines (I agree not to go for men with children) but also let people unfold over time.
People do tend to do things later at the moment, and someone your age might still be working his way up in terms of career and finances?
I'd look for compatibility, generosity, a flexible/realistic attitude to life and career, and similar attitudes to spending and money rather than someone who is already super established and expects you to fit in with them.
Not a hippy if that's not your type but not an arrogant banker?
If you've got a good job yourself, two good jobs will probably go very far!