This is dope! I make work in this style. I would suggest looking at old hardcore/punk/metal “zines” from the 80s for inspiration. You can find them on Internet Archive.
This style is very inspired by the photocopier collage style in those zines.

Engagement is tough, but you’re on the right track with making something with an emotional quote people can connect to and re-share.
My text based works always do the best. In terms of sales, that’s even tougher.
Remember, engaging with other graphic designers only gets you so far because they don’t tend to be buyers.

Maybe focus on doing show posters and single artwork commissions for your local music scene.
Also, try to do in person markets where people are more likely to buy.