Nokia X2 should run Android 4.3 at least so it should be able to use the Google Playstore.
this might help:
http://www.androidpolice.com/2013/08/05/download-latest-google-play-store-4-3-10-with-new-recently-updated-section-combined-update-notifications-new-episode-notifications-and-more-teardown/
and try going to:
https://www.apkmirror.com/
where you can download apps you'd normally find in the playstore, and even the '''playstore''' itself.