Both didn't go.
Is it a correct sentence?
Actually, I have read that both is not usually used in a negative clause. Use a clause with neither instead.
Learn English – May I use ‘both’ with a negative –“Both didn’t go”
negationpolarity-itemssentence-construction
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Best Answer
You don't usually use "both" in the negative. Instead, you should use neither such as "Neither of them went". I don't mean that " Both of them didn't go" is not correct. What I mean is that the use of neither is more common than and preferable to the use of both" in this negative sentence. See the last paragraph of the link.