I see a lot of people use blood effects so i searched up how to turn on blood effects and apparently its in the settings but nothing shows up for me just the normal settings no show blood option is it because i play in australia?

I'm seeing a sudden surge of griefers in low elo competitive, where they wouldn't get a single kill on purpose, take the spike with them on attacking side and give away positions to enemies on ALL chat. This is right from the first round....