[dagmx]

You can use DisplayLink to drive external displays.

https://www.macworld.com/article/675869/how-to-connect-two-o...

With some docks and adapters like https://www.sonnettech.com/product/m1-mac-dual-displayport-a...

They’re not completely successful from what I hear, but I know it works for some folks.

I have an M1 Max so I haven’t tried myself.

[als0]

DisplayLink in my experience has horrible performance. Not a good experience and I think that's why Apple avoided it.