How not to use chat

Now I totally understand that venting is a thing, and from time to time I'm a bit negative and in a bad mood. But here's the thing. I don't start chatting negative things on every single person for every single mistake. If you do that, you will most likely lose games. People don't play better when you scold them over everything. I get if I'm 1/6 I deserve some crap but if I miss a cs or am 1/1, let it go. Please. You'll be happier.