So far, https://www.howtogeek.com/250021/how-do-you-reset-a-keyboards-mapping-after-an-april-fools-prank-wrecks-it/ has helped me undo it.
I'm not exactly sure what happened, but my up arrow key is now w, same with the other arrow keys respectively. My a,s,d keys work fine but my w key is now the left arrow key. I can switch them with a button on my keyboard but doesn't fix it. I know it's not the keyboard as I plugged another one in and found the same problems. I also noticed that in games all the keys work fine, doing exactly what they are supposed to.

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