I cry while climbing ranked

As if platinum struggle is not hard enough, now I am going for Diamond. Every game was not close at all, snowballed mid comes to bot. Then you have the 'keep flame and blame the jungle'. 0/10 bot lane in demotion game >.< Snowballed game turns in to a lose after afk >.< Why Riot, why is my games so much harder than others. Can't i just have fun playing this game ;_;