I know how it feels by losing your bet by one stupid goal.
I always bet in the 80th minute that there will be no more goals at prety goos odds, but sometimes they score in the 90th minute and my bet results in a loss. Keep your head up, and gamble what u can afford to loose, nothing more.
I also had a bet on under 2.5 in the APOEL game. That was really bad luck, it's not the same as betting that there will be no more goals after the 80min. You have 20min left to play, and if a team is not satisfied with the result, they will take more chances and goals will likely to come in.
But a game having more than 3 to 5min discounts is not vary common, and 3 goals after the 90 min is even more rare. Even 3 goals in 9 min is rare lol
Everything went wrong on that game, and i'm pretty sure that is something that happens 1 in 100 games, or probably even less likely. Market was obvious closed, so houses were not even given 1.01 odds, because that would result in a loss for them in the long run. So that was a loss at odds bellow 1.01 :/