Chromium has tab groups where you can easily add or remove tabs from a group. It makes it easy to drag it out to a different window, bring it into an existing window, and the groups are collapsible.
I usually have a lot of forums open, work tabs, and just other stuff. Right now, my solution is dealing with it/creating separate windows, but it gets messy really fast when you have 4-6 different windows. It becomes a game of which one has the tab I’m looking for.
I use iOS, but I will say Bitwarden all the way, even if it’s implementation is not perfect on iOS. I’m sure it’s even better on Android.