Why do people flame in ARAM?

If I'm going to play ARAM, do not expect me to actually try playing. I mean a good handful of games I'm in, people are flaming me for just having fun. I mean a good handful of us are in ARAM to get rid of tilt from ranked/norms. If not, you're probably there to have a lot of fun. But, my point is: do not flame and be toxic in a game of ARAM. I mean it's only one game, and just have fun. I feel like as we keep on playing League, people forget to have fun in their ARAM games (or any other gamemode). I mean saying that does not mean to troll in ranked and norms. I'm only saying to enjoy the game, and just chill.