Key doesn't register while others are pressed (SOLVED)

Hello, I’m currently following the war battles tutorial, I did everything correctly, but when I hold left arrow and down arrow, the space bar doesnt register, holding any other combination works fine. Is this a bug or is my keyboard simply broken? I’m using a hp laptop keyboard
EDIT: I’ve seen other posts with the same issue, the problem is just “cheap keyboard”, so is there a way to solve this problem without having a deluxe gaming keyboard?

Are you able to use the same combination of keys in other games?

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I just checked and the combination doesn’t work in other games too, this is strange, i wonder why do keyboards do that, and thank you for your reply!

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I think this is called ‘keyboard ghosting’. I found this site where you can test it. Keyboard Ghosting Interactive Demonstration | Applied Sciences | Microsoft

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thx