HDMI excels for media consumption, while PC gamers prefer DisplayPort.
If you want a 'passable' gaming system that can handle virtually any current game at reasonable settings (not the highest), you can stick with the current laptop and run your main display via HDMI 2.1 ...
If you're someone who needs to (or likes to) take their work on the go, a portable monitor will make a huge difference. These are my favorite that I tested.
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