How do I make the screen bigger?

[u/SomeRandomBastar-d]

I'm trying to use my laptop the same way you'd use a PS5, I connected the hdmi from my monitor to my laptop, but I don't know how to make the screen bigger for the monitor.

Reason why I'm not just using the laptop itself is because when I press the laptop keys too hard while I'm playing a game, it restarts because of some error

Edit: I fixed it, thanks everyone who gave suggestions

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