I've never used Proton Pass so I can't comment on which is better. However, my wife and I have both used Bitwarden for a number of years and have no complaints. Works with Brave, Chrome, Firefox; works on Linux, Mac and Android. We don't have Windows or iPhone so can't comment on those. We can share selected passwords between us.
Works great with iPhone. It gets a little angsty when you have the Apple keychain or whatever it’s called activated sometimes. Honestly it is just a matter of selecting which to use, but the software gets a little confused sometimes.