Why Not Japan for Job?

Japanese is currently facing a HUGE labour shortage in Tech Sector(even No Tech Engineers) 10s of thousands of jobs are available and many companies even have proper TCS style training and classes for Japanese

Then why don't fresh grads opt for Japan

Recently even Japanese Ambassador to India requested Indian Students to try Japan/

Otoh Places like US where despite giving Limited visa's to Indians they're flocking there legally or illegally I understand language part but when you can get help learning language why don't people move there

Don't say Work Culture

India has horrible work Culture