Honestly appreciate your work and respect the effort put into making the game. Maybe try adding extra patreon tiers for support and then fans will donate. Do your best and most importantly do what you like.
I thinked about adding more patreons tiers or increasing the only one, but the thing is i don't have much to offer to do that, and if people wasn't interested on the 1 usd to keep me asking for the stuff for free, then i guess people won't support the 5 usd patreon either, game is doomed i guess