Hi John M My Name is Jen A, Thank you for reaching out to us.
I am sorry for this inconvenience / Do not worry, I will help you sort this issue/Rest assured that I will do my best to assist you with this matter.
In the "Settings" window, scroll down to the "General" section. e. Under "When opening this team," select "Open on the team homepage."
Please see the answer from my colleague with regards to this matter. https://answers.microsoft.com/en-us/msteams/forum/all/how-do-i-get-a-team-to-open-on-its-home-page/1b63abcc-257e-43bd-b444-c286bb58033a#:~:text=In%20the%20%22Settings%22%20window%2C,Open%20on%20the%20team%20homepage.%22
Let us know how it goes, we're here to help you further if needed. Jen A.