How to limit annoying Facebook Notifications?

How do I severely limit what notifications I get on my android phone Facebook app? I thought I went in & set the notifications to only send me what I want but I must be doing something wrong. I get waaaay too many notifications about stupid stuff like "Susie just added to her story, Mary has a status update (whatever that means) or Bob just added a photo" etc. Ultimately I would like to limit all notifications to just:

-Birthdays
-If someone posted/commented on something I posted.
-If...

How to limit annoying Facebook Notifications?

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