I had to pray everytime i start playing LoL

Everytime I play this game I pray....why? Cos there is 50/50 chances that my game just load till 100% and would not let me join the game. Sometimes I had to force to reconnect the game then it would allow me to join the game properly....if not, the game would already being remake. Thus I ended up being slapped with leavebuster. Anyone knows how solve this problem??