YOU SAID:

I notice people about them wearing their masks wrong

INTO JAPANESE

マスクを間違えている人がいるのに気づきました

BACK INTO ENGLISH

I noticed that some people had the wrong mask

INTO JAPANESE

一部の人が間違ったマスクを持っていることに気づきました

BACK INTO ENGLISH

I noticed that some people have the wrong mask

INTO JAPANESE

一部の人が間違ったマスクを持っていることに気づきました

BACK INTO ENGLISH

I noticed that some people have the wrong mask