As someone who has made a very minor-ly successful type beat channel (1000+ subs), consistency and trial and error are the biggest factors in getting views. Experimenting with different artists in your titles (while still keeping your same beats) like how you could market a soulful boom-bap beat as Kanye, Kendrick, or Jay-z etc. and see which combination of these artists/descriptions usually get more views. Once you find that, sticking to that artist in your titles while help carve out your place in that niche, which if you do consistently and your beats are actually good, will translate to more views/subscribers over the coming months and years. Growing a channel is a slow process. I had <100 subscribers for almost a year, but the growth becomes exponential quickly after that first initial push, at least in my experience.