Reach out to a few people with a sizeable audience (or some other means to potentially amplify it) who may be interested. And also don't immediately write off c

Reach out to a few people with a sizeable audience (or some other means to potentially amplify it) who may be interested. And also don't immediately write off channels that didn't work. There's a lot of luck involved. You can definitely try again later in a different way. Then there's always paid advertising don't be afraid of it. With not much $ you can do a lot of experimenting.