In order to get Google AdSense approval you need to do the following things:

1.  Your domain needs be at least one month old

2. Write at least 20–25 unique articles

3. Your website needs to have the following pages:

1. 1.  Terms and conditions
   2.  Privacy policy
   3.  Disclaimer
   4.  About us
   5.  Contact us (2,3,4,5 are mandatory)

Follow all these and submit your website to Google search console before applying for AdSense and boom!! You will get AdSense approval