NeoSG
not sure if it was the problem but I know a big reason a lot of authors lose motivation for their stories is not actually having a storyboard of some kind made up before going into it. needing to come up with chapters near on the spot really kills motivation. If that isn't an issue, good, but if you don't have one I suggest trying it out and seeing how that does for you.
sad to see it go on hiatus but I also know how you feel as that's the state I'm in with my own story that and thinking my writing is trash which further reduces motivation to write. hope you continue with this at some point I'll be waiting to see if it does while reading other things in the meantime best of luck with everything and until next time.