Hello and welcome to Apple Support Communities, Curlboy,
We understand you've notice that you're unable to see video from F1 TV when using external monitors. We'd be happy to provide information about this.
First, you'll need to identify which MacBook Pro with Apple Silicon you have. As some models can only support one display. You can check at Apple Logo > About this Mac > Overview tab.
Then, use this page and find your MacBook Pro, and select the appropriate Tech Specs link.
Identify your MacBook Pro model - Apple Support
Then, check for how many displays your MacBook Pro supports.
For example, if you have a MacBook Pro (13-inch, M1, 2020), the Tech Specs show:
Display Support
Simultaneously supports full native resolution on the built-in display at millions of colors and:
• One external display with up to 6K resolution at 60Hz
MacBook Pro (13-inch, M1, 2020) - Technical Specifications
If you determine that your MacBook Pro is a model which supports more than one display connected at the same time, continue with the below steps:
Since it's hard to say what restrictions the developers of F1 TV have in place, you can do some tests to see if it continues. First, check if you're able to play a video correctly in safe mode:
How to use safe mode on your Mac - Apple Support
How to use safe mode
Apple silicon
1. Shut down your Mac.
2. Turn on your Mac and continue to press and hold the power button until you see the startup options window.
3. Select your startup disk, then press and hold the Shift key while clicking “Continue in Safe Mode.”
4. Log in to your Mac. You might be asked to log in again.
If the issue persists in safe mode, test in another user account:
Change Users & Groups settings on Mac - Apple Support
Regards.