Complete Layer-7 Regex For All Social Media (Socmed)
/ip firewall layer7-protocol
add comment=all-sosmed name=all-sosmed regexp="^.+(facebook.com|fbcdn.net|twitter.com|instagram.com|telegram.org|line.me|whatsapp.com|web.whatsapp.com|path.com|signal.org).*\$"
Credit: www.o-om.com