Some resources:
1/ https://github.com/blocklistproject/Lists
this is for your DNS resolver ( unbound does a great job on that, but YMMV, many routers should allow you to use that on the local dns forwarder, or you can get a pihole etc... ).

2/ https://github.com/NetSPI/NetblockTool or a simple script with ` whois -h whois.radb.net -- '-i origin AS32934' | grep ^route` to get a list of networks and IP addresses to block at your firewall level ( in and out ). Every firewall will have a way to integrate that list.

1 will make sure that you do not try to contact a facebook owned domain and 2 will ensure that if a facebook owned IP tries to contact you, it will fail.

This is obviously something you need to integrate *WITH autoupdates* on your home router firewall, and servers in the case of the fediverse but it should be pretty straightforward. Ask if you need more guidance on how to do so.

I've been IP/DNS blocking all facebook owned services since years now, and everything works just fine...

BTW, si tu t'y connais en Metronome (XMPP) ou en YunoHost, est-ce que tu peux regarder ça et/ou boost pour essayer de me sauver ? :D
https://forum.yunohost.org/t/metronome-cant-join-resolve-any-other-domain/2649/1

41,703 accounts
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+18,737 in the last week

https://googleprojectzero.blogspot.ch/2017/04/over-air-exploiting-broadcoms-wi-fi_4.html - fantastic work by Gal Beniamini.