comments:
smstnitc posted on r/framework1w
Start looking into how a lapdock works. This was the first one I saw when searching to see if what you want is a solved problem already (I didn't know about these until today) https://a.co/d/061ZAqRZ There's also a lot of projects out there that does the same with raspberry pi's. Research those, too. I think it's pretty common tinkerer thing to make a laptop display work with a pi.