Here's a simple solution to use two devices with one monitor

Got too many devices and only one monitor? Simplify your setup with the Anker HDMI Switch, which is a mere $9.99 right now.
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The OG Switch has one massive advantage over the Switch 2, and it'll let you extend your screen using this cheap portable monitor

The Nintendo Switch 2 is better than the original in every way. At least, that's the case if you stick to using standard TVs and monitors. Thanks to the dock compatibility issues I won't shut up about ...