Well the orientation of this video doesn't work well for youtube, it would be better suited for more vertical platforms like tiktok or instagram. You've got a decent thing going but if you want to try and break into the youtube market then try and get a landscape orientation going. Maybe even try adding more viewpoints with close up on the keyboard and a profile of the vocal mic.
The music itself sounded very good, that beatboxing was awesome, but the video was not on the same level. What I mean is that shooting from one angle with a very everyday background decreases the quality overall. As mentioned earlier, this was not very suitable for Youtube. The video is too short and there is nothing information, only the titles cover what is it about. I would like to see more info in metadata, like who are you, for how long have you practiced beatboxing, etc. But my advice is that you need to plan the video to be more compatible with Youtube. Keep up making great music!
I would suggest adding some type of branding. It'll be more beneficial for your channel if people don't just sub for the music, but also for you. Maybe add an intro and talk a little before you go straight into the music. Find some ways to show your personality.
On thing to make this more optimized for YT is put something in the side bars be it video or picture
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