stop typing.
Just stop typing. Disable all chat.
The only things you should type are:
"gj" ‘... flash ... time" "no sums ..." "baron" "dragon" "group" "peel for ..." "engage" "push..., i'll split" "warded" "get out" "forget me, snowball other lanes"
everything else is useless.
This alone should raise your win rate by at least 3%.