I've been using Syncthing + KeePass for a few no this now after leaving Bitwarden. I do find that I often get sync conflicts, though; I think it's because I will open Keepass on my computer, then on my phone while forgetting to close the one on the computer, but I'm not sure.

any suggestions?

my keepassxc syncs without closing, it autosaves changes and they get directly synced. i tested in the beginning leaving apps on on mutiple pcs and syncs landed pretty quick.

unless you make changes on the same db on two different devices in under 1minute you shouldnt get any problems