Betfair is banned in my country, can I use anyone else?

Yes! You definitely can, Smarkets, Bet365, other bookmakers are fine, the only difference is with an exchange you can Lay the Draw and by using the above you would have to Back the Home/Away side. You would also need to Back Over 1.5, 2.5 etc for our HT strategy instead of Laying the current score on Betfair.