The average soloq casual experience

No embark, this is not fun, no embark, it is not even worth launching the finals anymore. In way too many games you get 4-5 player premades as enemy with a team full of newbies and then someone leaves before 1 minute of the game has passed. What is this? Can we get penalties for leaving normal games so at least the annoying 4v5 part is somewhat reduced?