@kaimaxnuk
Hi there!
I just read your comic. So far, so good. I really like how you switch to a muted color palette to express sadness. I have nothing to suggest because I think it is an excellent comic. In fact, I'm having the same trouble as you have; a good story with good art, but no subscribers. The only thing you can do to get more people to read your comic is by being active and promoting your comic.
Keep doing it, keep experimenting with color, and eventually, you might get lucky!
Hope this helps