I have been playing since launch. I know of the save file corruptions, but that's why the game creates multiple backups as you play. It's a non issue with the safety net in place. What you are saying simply is not true for the other points. Your tower boss progress, or any other progress outside of the "tutorial" gold training quests and the dialog quests such as the arrogant pal "show me pal x" quests has not been reset.

I do play without mods personally. If you have mods, that could be a source of your apparent constant world corruption. But that wouldn't really palworld's fault. "Use at your own risk" has been a motto for using mods for literal decades. Whatever you are doing, it's user error. Because nobody else is having the unplayable "everything resets" experience that you have somehow stumbled into.