Given you use Firefox, have you considered using the built in Sync service and companion Lockwise mobile app:

https://hacks.mozilla.org/2018/11/firefox-sync-privacy/

I seriously considered Bitwarden not so long ago when I was looking for a password manager, and then realized I also need to maintain bookmarks across platforms and devices. Sadly Bitwarden doesn't offer that as a feature.

I'm curious if there is a differentiating feature of Bitwarden over Sync