I also use KeepassXC and Synthing together and I am very happy with this combination.
One tip that I have, if you are worried about the security of the database file being shared, is to get 2 Yubikeys and use these, along with a strong passphrase, to protect the database file.
GreatBlueHeron@piefed.ca 1 day ago
I've been using various versions of keepass for ever. Until recently I had the database on Google drive. It's sync'd with syncthing. It's a bit "different", but once you get used to it, it works very well.