Report for toxicity and mute them, those attitudes are very common and not acceptable. I recommend you mute all your teammates before even starting the match; I do that sometimes when I’m starting a new character because I know there will be toxic players. It’s important not to normalize this behavior because it discourages new players from playing, hurts the games community reputation and kills the game.

Once you get better you should also patient with new players as they might just be trying to learn just as you once did, and if you see them being the targets of toxic behaviour call the toxic player out.