Sign up to Microsoft Teams for free nonsense.
It's horrific to create a new free Team.
When you try to create Microsoft Teams for free at this page https://products.office.com/en-gb/microsoft-teams/free you are instructed to "Enter your email address to get started". When someone filed its own email (not matter if Microsoft account or another) everything ended on page https://teams.microsoft.com/_#/guestLicense with notice to need create organization account. But you never get information how to get it, unless you luckily try to press SIGN UP FOR FREE buton without email filled and then new information window appear and you are finally informed you have to create Office 365 trial account.
Maybe it's sabotage :-)