Additional features, settings, or issues not covered by specific Microsoft Teams categories
I think I may have figured out the issue, the Teams app (on my Android phone at least) had all "permissions" denied. Oddly I tried to select "all permissions" but it would not take so I had to manually, and individually, allow storage, phone, camera, microphone, etc. I'm assuming "storage" was the culprit, more than likely Teams was trying to write a file to the phone and the endless loop was a result of that failure.
Thanks bro! You provided the clue. I think I had settled this issue on my HUAWEI Mate 20 just set "storage", "phone" and "microphone" as "Allowed". Launched 2 times and reboot phone 1 time, so far so good.