Keepass2Android supports Dropbox, Onedrive, and a few other ways of direct sync. https://play.google.com/store/apps/details?id=keepass2androi...

For Windows 10/11 users who use a MS account, put a portable copy of Keepass on OneDrive and it'll be there right after a fresh reinstall plus sign-in, and you can access it from the Android app using OneDrive sync built into K2A.