I used Bitwarden a lot but it pissed me off that I couldn’t add new entries while offline, that accessing attachments requires me to be online as well, and that attachments are not part of the backup.
I switched back to Enpass due to that, which has even a slightly better UX IMHO. It’s not FOSS though, but uses the FOSS sqlcipher library for storage. So if push comes to shove, I can still exfiltrate my data without relying on the vendor.