I ran Keepass synced through my Nextcloud for a long time as well, but I switched to Vaultwarden after loosing Passwords due to sync issues. Almost got locked out of an important account. Luckily I noticed it early enough to recover it through my Nextcloud’s versioning. But since then I’m too paranoid to rely on a password manager without a reliable syncing mechanism built-in if I’m gonna use it daily on a range of different devices.