Don't type in-game and disabled all chat for a better experience
There's little reason to type in-game unless it's to say things like "wait for 6" - "let them push". I probably type 0-10 words a game, usually going towards 0-5.
Instead of typing, can also express yourself with emotes. I don't like being toxic with my emotes, so instead I use it to encourage my teammate and raise the morale by using emotes such as "OMG i LOVE IT".
All chat is also really worthless. What would you ever have to say to the enemy team, especially your average Joe that vs's randoms every game from iron-plat? Just disable it. I also like to disable enemy emotes as I find them worthless info as well and can tilt you and mislead you.
I just think it's important that if people want to enjoy the game for what it is, to actually play it instead of typing a blog every game, mass pinging people for mistakes when everyone is human, accusing people of inting when it's just a bad game or that's just how they play (you're in that elo with them).
It's just a bit disappointing how in every elo I've played in that people constantly just create the negative atmosphere themselves and go off and say "they ruined it not me". You can make countless good plays but if you make 1 mistake your whole team just goes on you. Sometimes I do an advance play where I use hourglass because if they did use an ability I'd be dead, but they didn't but apparently it's a mistake? Sometimes things in this games are a 50/50 and you just have to take the chance.
Maybe it's just the jungle role though. In my games, I rarely see any laner get flamed for being terrible. That probably happens every 3-5 games.
Treat others how you want to be treated. Would you want to be flammed all game? Would you want to be mass pinged? Would you like it if while flamming you, they afk @ tower typing and take free harass?