SOLVED
This is a subject in many threads and every time I come across one I scour it for "the answer", because I hate getting notifications from facebook posts. I have tinkered with the social media app, the facebook app and on and on.
This morning I have figured it out!!!
I did this on my phone but you can do it on the computer if you have trouble getting the full Facebook website on your phone. I kept getting the Mobile site for a long time, but after tinkering, I finally got the full website.
1. In your "Account" tab there is a "notification" tab. Go into that and delete all the check marks by items you do not want to receive in either email or sms columns. Go to bottom of screen and save your changes.
2. No more notifications.