YOU SAID:

They're not sending their best

INTO JAPANESE

彼らは最善を尽くしていない

BACK INTO ENGLISH

They're not doing their best.

INTO JAPANESE

いや がんばってます　一応...

BACK INTO ENGLISH

No, they're doing their best

INTO JAPANESE

いや がんばってます　一応...

BACK INTO ENGLISH

No, they're doing their best