Constant client crashing

Everyday for quite a while now I have had serious issues with the client crashing as I am loading into a game. The reasons, that I get when the client is crashing, are ranging from internet disconnects to "missing critical data insert champion name here" or "your client seems to have been corrupted." No other game I play has issues connecting to the internet, League is set up as an exception for my firewall so I don't think its that. The "missing critical data" I can't seem to wrap my head around, as I will play a game with a Leona in it. Next game, I'll get a crash with "missing Leona" so I don't see whats happening unless the game is deleting content between matches? And the corrupted data, is by far the most common and time consuming as it crashes to desktop then when I relaunch the client sometimes I can still here the game in the background while I watch it scan the x000's of files till I can play again, many times causing me to join a game 5-10 minutes late which almost 100% results in a loss for my team. I've suffered through having to wait to play games, one time a 20 minute wait before I could join que again. So far I've yet to receive an actual ban thankfully.

What I want to know is there any way I can make these stop, I can't be the only person experiencing these problems every single day. With worlds going on I don't expect a swift result or answer but until this is resolved I can't bring myself to play the game as its not fair to me personally to have to constantly crash and its not fair to my team to be put in a negative position because of an unresolved issue on my end. I have been playing this game since Yoricks release and have seen this game have some rough patches and bugs but this is the only one to ever render the game to a point where I can't play it and have fun.