[CRASH] Game crashed while playing ranked match

While i was playing a ranked match, the 10th match which was supposed to decide my rank because this is my first-ish season playing ranked(previous season i played only one ranked match), the game crashed and i had to disconnect and reconnect. This had happened 3 times before I couldn't reconnect again and i wasn't the only one having this problem, I was playing adc as Vayne and i had a support Morgana who's game crashed the same time mine did and reconnected the same time I did and the enemy adc asked me whether their team was the only one having crashes. Now it's like the match is over but I cant join any other mathc, ranked or normal, and the above mentioned match doesn't appear in my match history. What do I do?