I have to say, I'm older than you - mid 40s and I agree with everything everyone else is saying.
I had what you want. I met a man at 25; child at 31; then discovered his affair at 37. I don't have any of the things you have because he was emotionally and financially abusive. I have an older child too because I thought I'd also thought I'd found someone previously and he also cheated.
I completely forgot about the idea of dating or meeting someone. I have tried online dating and completely agree with you - I hate it! It just feels like one big 'pick me' dance.
I started hobbies when my children were old enough. 7 months ago, I met someone I thought there was potential with but now that seems to also be dead in the water.
I think that, on paper, I look like a reasonable catch. I'm reasonably attractive; I have an attractive enough figure; I'm educated; I have a job I enjoy; I have a home that reflects my personality; I play in a band; I go to the gym... previously, I sang in a choir; I took swing dance lessons; I did BMF and met loads of people. Some I'm still in touch with, some not.
But finding someone who loves and cherishes me? Nope. Finding someone who prioritises me? Nope. Finding someone who fancies me? Nope. Finding someone who wants to be with me? Nope. Not got any of those things.
Actually, swing dancing is something that I would highly recommend. There will be something in your area. It's incredibly sociable. You don't need a partner to attend classes - it's fine to go on your own. The dancing is done in a circle and partners rotate. Social dances are popular - again you don't need a partner, it's very 'old fashioned' in the sense that people will ask each other to dance. The people I met through it were generally lovely.
There are swing dance festivals all over the country and overseas too. I have a couple of friends who still do it and they're rarely at home! The ages of participants are anything between university students and octogenarians. New relationships spring up all over the place. If you're not already aware of it, it can sound a bit 'like what your grandma did' as it's largely mid last century music you're dancing too. But that doesn't really matter. I really would recommend it to anyone who wants to meet people generally.
If you search up Lindy Hop on youtube, you'll get an idea.