hello friends,
please tell me why facebook banned when we post any links...?

Hi Friends,
Facebook now is really strict when it comes to links within the post mostly on online gambling website. Try to read their guidelines for you to be clear in some technical ways,

Make sure you don't post spamming links, otherwise facebook is very strict if you don't follow guidelines of the website.

Temporary blocks from sharing posts on Facebook can happen if you've: Posted a lot in a short amount of time. Shared posts that were marked as unwelcome. Shared something that goes against our Community Standards.