Very conventional, and perhaps good, advice would be to publish useful material adjacent to your problem, educational content that can lead to your solution/app. You might also try working with an LLM to generate less conventional marketing notions. You might also read "Hey Whipple, Squeeze This" to learn a bit about copy.

If it's for iOS I presume it's paid? If so, giveaways can get people to install it who wouldn't have if it were free. The downside is that most won't become active users, but if you give away enough copies, you'll get plenty.

Nobody’s going to like to hear this but … Nextdoor. Especially if it’s a B2C app, ND is your best source for early testers and users. Source: got my first paid users for my first ever iOS app this way thanks to 200 waitlisted neighbors. It works.

And yet you didn't provide a link to it.

Dude I’ve tried everything I guess nobody wants my shit but me

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