I’m using KeePass in 2 ways: 1 way in a shared Samba server (for shared accounts) - tends to get corrupted when multiple people try to access it, even without writing to it. The other way is by manually rsync / scp it to all my devices whenever I make a change in one of them. The later method, I basically have a backup to my KeePass, which is important to me because I literally have no idea what generated thing is inside each account. Also, this way, I never had a corrupted DB, compared to 2 corrupted keepass dbs when accessing the same file on multiple computers using samba.
I used SyncThing a long time ago, but I don’t really remember why I got scared of it and removed it… I saw a random IP subnet (either a private class A, or a public 100.something, don’t remember) that was not mine, when syncing between separate LANs at home (my wifi network and my wired network), but I’m a fanatic of simple stuff anyway, so rsync between Linux boxes, WinSCP on Windows and PrimitiveFTP on Android with sshfs mount on my main Linux PC and it’s all I need. As mentioned above, I only sync whenever I make a change.
I hope I’m not too late with this comment, a video is already up (joined this discussion after I watched that).
I wouldn’t trust the built-in password manager. For one, it used to be plain-text (as thro mentioned) and 2, using JS basically any rogue website can grab your accounts. I prefer using KeePass without extension, just using the Auto-Complete function whenever possible (unfortunately things like flipping Google, Cisco and Quantum Workplace require you first complete your username, hit next, load another page, then enter your password, which is very dumb and I can’t use auto-complete with them, just copy and pasting my accounts).
Even if Google has 0 privacy, usually their tools are secure. However, I doubt there aren’t some exploits written in JS to grab your accounts and credit card information, if you save this kind of data in the browser. I always separate accounts from the browser. Do one thing and do it well… however, browsers are the most bloated software that everyone is using, basically doing everything from document viewing (html / pdf), to playing music and video, viewing images, transferring files etc. I abhor the modern web. But that’s just me. As for KeePassXC, it works wonders when I have to fill out accounts when the password box is one tab away from the account box.