If i remember football offside rules correctly (and if they haven't changed in recent years) you need goalkeeper + 1 defender or 2 defenders behind the striker.
Goalkeeper isn't mandatory at all. If striker is ahead of all the 10 players other than Goalkeeper when he got the ball passed, it will be offside. This one doesn't look like that at all.
A bit WRONG... To be onside you'll need further from the opponent's goal line than at least two players or the ball itself, but in most cases the goalkeeper is always the last man hence, it is always judged by the last player, but the official rule is you shouldn't be ahead of the second-last man.. so if there were to be two defenders in the video is even without the goalkeeper, it would have on side. Whether some livescores websites considered that to be a goal is irrelevant, the decision of the official organisers is the only relevant one and then the sportbooks would still be within their rights to consider the game a void in case of none clear decisions.