"Se ser tímido fosse uma escolha, ninguém o seria"

"Ninguem seria tímido se isso fosse uma escolha".

That is my attempt:

 

No one would be shy If it was a choice;

If people have choice nobody would be shy.

Thanks !

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Sorry,

"If people have choice nobody would be shy".

So, "have" should be in its past form "had", once that you have used "would"