I still have not gotten this to work. You can even log into Teams for your personal account but can't seem to add a profile.
I think my current problem is that Teams uses a Broker App, in my case that is Microsoft Authenticator, but I can't remove the authenticator because it would create too many problems trying to access my personal account.
It is pulling the data out of thin air, and locking teams to the personal account, associated with Hotmail in this case.
I have removed the account from outlook, OneDrive, it's down to Authenticator.
Even logged in to my work Company Portal, and it still doesn't care.
My Samsung S51 does not have Android's Multi-User accounts even.
I think, if it was my company, I would have someone just use a Personal/Work profile my Android does support, and have Teams be a Personal app, and a Work app separate, BUT it doesn't seem to work like that.
I think you can setup Teams as a Work company app but requires a lot of work to keep them separate. Same with Outlook and all apps you download from the store. It just says HEY you have it your good, when you need to install multiple copies of the app, over different Work/Personal separation.
This gives BIG scary messages, and gives companies the ability to wipe devices, which is a personal data nightmare.
When if done correctly removes the Work profile and leaves the personal data, it just Gives someone, the ability to really ruin a personal device from Intune.