Do you think the winning effect causes the feeling of being invincible in the game?
That was just a natural response of your body. When you are playing and dominate the game at the same time, you get hyped and your self esteem boost up which leads you to think that your opponents are easy to beat thus your brain commands you to continue playing without even considering that there still a possibility of sudden shift of happenings.
In many games, we use techniques, strategies, where you can find patterns, but the psychology we have in our brain is not accepting when we are losing, and we want to recover ... Is it a mistake to think this?
That was normal too. Of course you get used to winning so what you tend to do is to play again to achieved it once again. Greed and high ego are the main factors connected to this kind situation.
Or should we assume the loss and come back at another time?
It depends. If I knew that I can still afford the losses I get and my guts to win is still present then I will continue but when I come to the point that I'm already pissed off due to a losing streak, for example only, then I will stop because the bad vibes are present already which leads to loss of focus and unhealthy emotions.