i have no solution to this problem, as i'm in the same boat, i think it's worth pointing out that in japan, european cities, and american cities, the problem of male loneliness is still rampant. japan in particular actually still has 3rd spaces, functional public transit (as in "can take it to get places in comparable times to just driving"), and is safe enough to walk around well past midnight. japan also has one of the lowest birth rates in the world. it's happening everywhere, and contrary to what the other guy is telling you, not all of it's your fault. men aren't the only ones never leaving their houses, anon. i guarantee within 25 miles of where you live, no matter where it is, even in bumblefuck nowhere innawoods, there's several single women your age who would actually  love to be your girlfriend. but you, and any other potential suitor, will never find or interact with them. ever. i'm personally still learning to cope with this, as my attempts to meet people irl keep falling flat, too. it's rough, man. all i can really do is acknowledge your struggle and remind you you're not alone, and i think you've put in a lot of effort. it's just that sometimes you never draw the cards you need.
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