There are many different layouts for keyboards, and many deviations from standard layouts. You can use keymapping software to change the function of a key.

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People without a pinky finger don't need one.

The pinky finger is your smallest one at the opposite side of your thumb.

If my right pinky is missing, I don't need a right ctrl key.

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This answer has nothing at all to do with the question.

And another one. Did you both just ask chatGPT or what?

Welcome to the wonderful world where us non-US keyboard layout users have been living for decades:

The game says, press "[". Sometimes I can press the key where "[" is on an US keyboard. Sometimes I can type "[" by pressing AltGr+8 in my language. Sometimes neither works (because the game doesn't know about AltGr, and I interprets it as "right alt") and I'm just unable to use this particular control.

The same with numpad without the dot bellow the plus key, usually they put a larger plus key and that's it but I really like the dot and it's harder to find