I’ve had my firefox settings/setup with multi-account containers, etc. dialed in for years. Never had any reason to change that. Librewolf is nice for people who don’t already have existing & configured installations of firefox to have it basically configured by default.
The best browsers are forked ones. Use librewolf,mullvad,ungoogled chromium,vanadium,mulch (android).
I’ve had my firefox settings/setup with multi-account containers, etc. dialed in for years. Never had any reason to change that. Librewolf is nice for people who don’t already have existing & configured installations of firefox to have it basically configured by default.