Game is crashing constantly

Hello i want to address a problem that im having 3 days from now. When i play the game sometimes freezes and crashes and then i have to reopen the launcher again. Sometimes i crash 2 times in one game and thats affecting my gameplay. I thought that its from me so i run the repair tool and it wasnt fixed. I also reinstalled League of Legends but that didn't work too. I heard that other people have this problem with the game too. Thank you for your listening [poppy-wink]