How do I market a super niche business without budget?

Hey everyone! My name is Lucas, I'm the owner of Animade.co. Animade.co sells animations to social media influencers of any size and provides them with animations that actively help them to scale their channels of influence. They tell the viewer to subscribe or like visually, for example, which makes a genuine difference in likes & subscribers per video pushed out. Now, I'm only targeting mid-sized to big YouTubers (7.5K - 10M subscribers). That's a *really* small market, and I'm competing with an older company selling the same type of products called Pixelpacks.net. I'm trying to figure out how to market my products, or if I should even bother at all. I get about 2-3 sales a month totaling about 100 a month. That's nice pocket money at age 15 (almost 16 now..) but not a big deal in comparison to other earnings. I know I can scale this more but I have no real budget to market it. I have next to no reach to begin with (though I've worked for very big YouTubers, having my own animations seen hundreds of millions of times) and I don't know how to get much further than 209 followers on the Twitter account right now. Any suggestions for marketing methods that do not cost too much money and provide me with genuinely useful reach? Any tips are appreciated. Thank you guys so much.