Although google happily lets you log into more than one account from the same browser, microsoft doesn't let you.
I used to, and still do use profiles, which are basically entirely seperate instances of firefox for each main account.
Back when I tried containers, they were really frustrating, because they would always ask which container I wanted a tab in. But that was a while ago, and they've probably fixed my annoyances so I will try them again sometime.
because they would always ask which container I wanted a tab in.
I don't remember having to deal with this but it does not do that now. you can set a container to always be used for a website, and then it'll ask you what to do if you try to open it outside of that container, but that's it.