Most newbies should always remember, that when they make a bet on a which team would win, it is considered full time only. Overtime and penalties does not count. I have some friends that were confused why they have lost, when the team they have placed a bet won.
This is one I personally have experienced on, there was a match I place a bet on, at the end of the 90 minutes plus extra time, the score was zero on both sides.
It later went to penalty and the team I place my bet on to win the match won the match through penalty, and yet, the casino recorded my tickets as loss, at the beginning, I was furious as I personally hate and try to avoid anything that will have me trying to reach with a customer support, I decided to ask a friend with much experience in the gambling business before contacting customer support, he explained this to me.
And my personal advice, before placing a bet, check games results on different sources. Game scores does not update immediately, and by the time you hit "place" button, game score might be in a process of changing. Ive been in a situation, when I bet on a specific score, and after I've made a bet, the next second score was changed and my bet should not even exist (I've placed 2:0, when the score was 3:0 already).
I will personal advice against betting on matches that are already ongoing, not saying its bad though, but I don't just like betting on matches that are already in play, I have seen gamblers encounter system errors that lead them to loosing really big amount of money while they were betting on games that were live in play.