How far can only japanese take you?

Hi, 24M(non native English speaker) graduateed last year in a normal non specialized degree. Learning japanese at the moment, cleared upto n4 hoping to reach n2 by next year. Can just learning japanese get you entry level jobs in Japan? How is the market right now for foreigners? Also will doing it courses like data science and ai help you get entry level jobs there or a cs/it degree mandatory?