YOU SAID:

Just gotta get my notebook back

INTO JAPANESE

ノートを取り戻さなきゃ

BACK INTO ENGLISH

I need to get my notebook back

INTO JAPANESE

ノートを取り戻さなければならない

BACK INTO ENGLISH

I have to get my notebook back

INTO JAPANESE

ノートを返さなければならない

BACK INTO ENGLISH

I have to return the note

INTO JAPANESE

私はノートを返さなければなりません

BACK INTO ENGLISH

i have to return the note

INTO JAPANESE

私はメモを返さなければなりません

BACK INTO ENGLISH

i have to return the note