Thanks for posting this, it was an interesting read (and again for the game of course!).
Although I don't really make video games, I can relate to the empty feeling of finishing and releasing a big project. Right now, regardless of the volume of the feedback you got and what you may have expected, I think the best way to think is: you have succeeded! You created something awesome, you brought the project to completion, added a solid entry to the GB scene, and made your mark on the world.
I'm guessing you already posted this in other places too, I'm sure there are other communities who would love to know about this game. Have you thought about starting a Discord server, for people to share tips and talk about the lore? In any case, good luck with outreach and any future projects, if you choose to pursue them!
(BTW, I think you mean "impatient" here too. "Inpatient" means a patient who is staying in a hospital.)