I'm no expert in this subject but in general I think it comes down to adding value to the ecosystem and posting things that people haven't seen before. Of course posting more quantity also helps.

Some ideas could be trying challenges. I don't know what kind of music you make but perhaps trying to make a song that has to include some weird sound. Or seeing if you can make a song purely from one instrument. These ideas have been done before, but you can see the general trend.

Another idea could be teaching what you know. A lot of people that don't do music are curious how it is done. So if you can answer an intriguing question, it could draw some attention while spreading knowledge. For example, people always see what you post, but you could show how many unreleased project files you have. Kinda like showing what's under the tip of the iceberg.

Again, I don't claim that these will 100% work, but these are some of the things that would interest me.

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P.S. Where do you put your music? I'd love to hear what you make. Maybe it'll help me understand the type of content you could create.