And also go into Macrumors forums, the Macbook page and search through the threads regarding external displays. I've read many issues with external displays not working well with M1 Mac Mini. I'm not sure if M1 Macbook Pro is also affected by those problems.
@Leo
See this
https://www.macrumors.com/2021/02/03/macos-big-sur-external-display-issues/
And also go into Macrumors forums, the Macbook page and search through the threads regarding external displays. I've read many issues with external displays not working well with M1 Mac Mini. I'm not sure if M1 Macbook Pro is also affected by those problems.