Shame, I really like the gritty dirty look of your art style & unique bug-eyed characters - kind of reminds me of Tank Girl for some reason; probably to do with the grungey look & feel of your characters & overall art style.
Have you tried asking for help in the recruitment section to find programmers & whatever else you might need? It sounds like you have plenty of artwork already & I'm assuming you have some plot or basic ideas for a story drafted up? You could probably find people willing to help you out with developing a prototype for your game to try & get more patrons. It sounds like you are in the same boat as me as you will need to find people willing to work for free or very little until you can hopefully attract some fans to your patreon/subscribe.star, etc.
Also, have you considered, to get the ball rolling, doing some small manga strips/webcomics or scrolling manga/webcomics based on your characters? - scrolling manga is single-panel manga/comic meant for vertical scrolling on a phone/tablet/browser, so it's much simpler than multi-panel pages. Also, they don't need to be in full color, & could be mostly line-art or line-art with limited monochrome or greyscale shading. Anyway, good luck with the project.