Technically, you can reduce the volume of only pings in the Sound options.
Not saying that'll fix the issue, just that you don't have to mute the entire game to stop it.
One other thing, while I really can't stand people who constantly ping harass me when things are going badly, Bhagswag does have a point. I feel I have pretty strong map awareness/prediction (I main Support), but it's difficult to truly focus when the fumes of anger and frustration are in the way.
Back up, take a breather while you assess whether there's a real reason for the 78174287349 question marks floating around you. It may be a real warning, or it may be nonsense.
Either way, you're probably gonna be better off losing out on CS/Kills than risking death out of spite and anger. :3
Oh, and please remember to mute them before it reaches this level of absolute fury and anger. :D
For real.
Muting the chat fixes so much more than I would have ever thought possible, especially when I . It's ridiculously stupid how calming it can be.