You're doing great Ernest, don't be so hard on yourself!
As for funding the project long term, if Patreon/Coffe/LibraPay ever stop being enough, maybe a Wikipedia-like style banner on the top of the page asking for donations could work? I think it's more than fair to remind people to help pay for the upkeep of the free project they use, and if they have a problem with it they can go fork (it) themselves!
PugJesus