If you are alone and have reliable internet, then syncing the password db file can be good enough.
I mean you can only run into a problems when you change it in two devices without sync in between. But that is super unlikely (in general; if you have reliable internet; you can improve reliably of this setup by syncing to a kind of server/file storage as "source of truth" as it won't be e.g. out of battery or disconnected from the internet ;-) ).
And as long as what you use for syncing doesn't blindly overrides when conflicting syncs happen you can resolve the problem by hand, not that I would expect it to happen. (At least with KeePassXC this works well, I haven't use keepass as most places strongly recommend XC over keepass without XC.)
I mean you can only run into a problems when you change it in two devices without sync in between. But that is super unlikely (in general; if you have reliable internet; you can improve reliably of this setup by syncing to a kind of server/file storage as "source of truth" as it won't be e.g. out of battery or disconnected from the internet ;-) ).
And as long as what you use for syncing doesn't blindly overrides when conflicting syncs happen you can resolve the problem by hand, not that I would expect it to happen. (At least with KeePassXC this works well, I haven't use keepass as most places strongly recommend XC over keepass without XC.)