If you have an itch only oldschool Arena shooters can scratch, you should probably go visit a doctor, but before you do you also might want to check out Quake Champions as it's completely free to grab until June 18th. Simply head on over to Steam, click on that shiny green "Install Game" button, and you'll be gibbing enemies in no time.
Perhaps most importantly of all, if you log in before the June 18th deadline you will be able to keep playing even after the free weekend is over. From what I can figure out you'll still need to either purchase or grind out all of the additional characters, but as far as getting a taste of what Quake Champions has to offer, this free trial is most certainly a good start.
To learn more about Quake Champions and its various game modes, you should head on over to the official website. And finally, I'll send you off with the recently posted E3 trailer. It's not very long, but it really doesn't have to be. You'll figure out what Quake Champions is all about fairly quickly. Enjoy!