YOU SAID:

I spend most of my time in my moms basement

INTO JAPANESE

私はほとんどの時間を母親の地下室で過ごします

BACK INTO ENGLISH

I spend most of my time in my mother's basement

INTO JAPANESE

私はほとんどの時間を母の地下室で過ごします

BACK INTO ENGLISH

I spend most of my time in my mother's basement