I usually make games, but I still want your opinion on this android music player app Thread

Hey y'all, I used to be really into 2D Unity Game Development but I recently got into android studio.

I used various different GUI's to make games on it and it was fairly easier. I was able to make my own flappy bird game out of it, it was a good experience.

But, I made this music player for android and I need your opinion on it, I need some feedback or should I just go back to Unity game development?

Heres the link, (Sry I didn't want to be spammy) : Play.google.com

Thanks in advance y'all.

That link doesn't work anymore, please check it out with this link

Play.google.com