I use Syncthing to synchronize between my phone and desktop. It's a little confusing to set up the first time, but I've had it on this phone for 3 years and no

I use Syncthing to synchronize between my phone and desktop. It's a little confusing to set up the first time, but I've had it on this phone for 3 years and not needed to fiddle with it. (It uses its own protocol.)