The amount of "IDGAF", "STFU", etc kind of attitude in RANKED game is just too much

I just had a really bad lose streak (got demoted 2 times in less than 24 hours).

I can say for sure it's because of the "I don't care" or "idgaf" attitude. (and sometimes trolls)

Mostly they're all just flaming other players despite they're doing really bad. Or sometimes they don't communicate, yet being toxic when they start talking (eg. Me asking the person to play safe / group, and they just reply with "stfu" or "report sona toxic"). People just couldn't communicate at all. They call communicating as toxic and flaming. I'm just telling people to play safe and I got "report sona toxic", "stfu sona", "idgaf", "F*ck you", so much.

Another thing, a player that's doing bad and can't stop flaming others. Going to all chat and flame others, and their own teammates. For example, there's a Malphite in my team going on 1/14, and he relentlessly keep feeding and goes like "idgaf", "stfu", "noobs". He has the worst score in team and he only keeps repeating those.

I assure you, it's so bad I cried for the intensity of those kind of player. Also it's freaking RANKED. I got demoted twice in less than 24 hours, so "They just wanna have fun" isn't a logical reasoning.

Similar topic being discussed here I really hope there's a way to solve this problem.