YOU SAID:

There's a couple of men, they're doing something I don't think they are supposed to do

INTO JAPANESE

何人かの男性がいる、彼らは私が彼らがやらなければならないと思っていない何かをしている

BACK INTO ENGLISH

There are several men, they are doing something I do not think they have to do

INTO JAPANESE

いくつかの男性がいる、彼らは私が彼らがしなければならないとは思わない何かをやっている

BACK INTO ENGLISH

There are several men, they are doing something I do not think they have to do