Hi Darken,
this forum can help you with wix code specific capabilities, like how you can call an api out there in the internet in general using wix-fetch or triggered by an event in your site. we are not familiar with facebook capabilities and the above use-case specifically. maybe someone from the wix code community who has done that before might be able to help. otherwise please have a look into the facebook api documentation or look into wix arena to hire a wix code expert to help you out
good luck!
Shlomi