I have the blueprint, got married for the first time at 51. My sense is your frustration is more with online dating than dating. Get off the apps, that's the best piece of advice I can give you. It will save your sanity and keep your heart soft.

P.S. I don't mourn the fact that my dating life didn't go the way I wanted it to in my 20s, and I haven't harbored jadedness in my later years. I simply got older, matured, and evolved. So did my dating life. Yours will too, hang in there.