I use the Strongbox app on iOS [0] and the KeepassXC app my Linux laptop. The passwords.kdbx file sits on my Onedrive, which the Strongbox app can access. On Linux I use a Onedrive client [0] that I use to sync several folders within my home folder. Strongbox supports both Keepass and pwSafe database formats. It also integrates well with iOS, with autofill supported (also supports Yubikey unlock and Apple Watch unlock).
[0] https://apps.apple.com/app/strongbox-password-manager/id8972...