I highly recommend you to don’t buy Traffic from any other sites.
Because some traffic is fake and generated by boats/robots and some traffic comes from unwanted sites like porn sites or any illegal site.
If you really want to get Adsense approval then don’t do that mistake.
Google always hate the unauthorized or Fake site.
So make your site Authoritative and user-friendly.
Always remember ” Google only loves you
when everyone else loves you First” …
So always Friendly with your user and provides them better user experience.
Follow my secret steps mindfully, I am sure you will get Adsense approval quickly and very easily.