Any good antivirus for xp from 2019?

I'm kinda in a hurry since there has been a weird thing happening to my PC, an random old firefox version appeared out of nowhere and just popups sometimes with weird title on it like "asudhyaiushdguasigda! - Mozilla Firefox" i have no idea why that happens, not only that happens but when i was using google chrome yesterday, for some reason whenever i opened google chrome it would just close, and then closing explorer.exe and it would make the task manager dissapear, and i found out that by restarting the PC and not opening google chrome it would be fine, i uninstalled chrome then tried to install it, but same happened with the installer, any recommended antivirus i could use to try and remove this small virus that is doing weird things to my computer?
 
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