can somone who understands the ban system help me out here?

so i had a game with two very toxic teammates i muted them both when they all caps raged at me and then went on about the game after the game they both reported me and so did someone on the enemy team because they told him to (idk what all they said to him) but he told me in game and after game that he was reporting me so i got three reports and the warning about behavior showed up...this is what worries me is the warning automatic if you get reported? or does it mean the game actually thinks your toxic?

also before anyone says anything i muted the two flamers and didn't say a word to them rest of the game so no i wasn't toxic to them and my other two teammates all i would say is pls group pls recall stop going solo pls ff and finally gg wp. so no i wasn't toxic i dont say anything beyond basic instructions or questions and gg.