cyzyvos This is part of my use case as well. Google is Orwellian with its insistence on signing you in automatically and without consent across all Google services when you sign in with any Google services, and I've not found a way to prevent this without breaking the login altogether. I have a few Google accounts for mail, one for Workspace, one for YouTube, etc. Having a container/profile/etc which enacts automatically when entering the defined subdomain is what makes FF containers work for me.