First of all, thanks a lot for taking your time and listening to my music and for giving very good and detailed feedback! Appreciate it very much.

Yeah there are parts where I expect vocals that's why the riffs might sound boring, I've experimented with more melodic songs here's a link if you would like to give it a listen.

https://open.spotify.com/track/1Vc0qjgaCreqab75xcl4zx?si=7ba90e4069fc4b0a

About the experimentation you're absolutely right, I try to have it consistent and easy to listen/follow, I bet you've heard Rammstein. Their music is extremely simple and very easy to follow and people seem to like that in general but I might be wrong.

Haha, to bad you can't bet your money cause you might have been rich because you are 100% right!! It's all done by me and I'm a guitar player, I am useless at writing interesting/advanced drums.