Fb almost always asks for a verification when you switch the ip/proxy of accounts. Id is pretty exteme though, usually PV or friend recognition and you can also login from the previous proxy to unblock it..
Proxies working for IG accounts doesn't guaranteed they are ok for facebook, depending on where you got them, previous owners might have abused them on Fb and never used them on Ig...
Online sms is not the best idea, they have also been abused a lot, real sim cards are ideally used.
Overall, there were many things you did wrong.. also as a word of advice, never do this with many accounts at once, always add 1-2 make sure everything works and slowly add the rest.