So frustrating to climb in flex

I am trying to climb to Gold in Flex Q before the end of the season, but it is so frustratring. I climbed from silver 4 to silver 1 pretty quickly and now, in Silver 1 every single game is full plat/diamond players in solo Q and their rank in flex is high gold. Why? Just why? I understand that my MMR is high because I won a lot from silver 4 to 1 but why is every game so damn difficult when its just to climb to gold. Obviously its always the enemy adc that is diamond otherwise its not fun, 1v9 the game and cant do anything about it. I just wish I could play my promos with Gold 5/4/3 players. GO see by yourself :
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