YOU SAID:

They were so tired that they didn't even feel liking saying "Good morning".

INTO JAPANESE

彼らはとても疲れていたので、「おはよう」と言いたくもありませんでした。

BACK INTO ENGLISH

They were so tired that they didn't even want to say "good morning".

INTO JAPANESE

彼らはとても疲れていたので、「おはよう」とさえ言いたくありませんでした。

BACK INTO ENGLISH

They were so tired that they didn't even want to say "good morning".