I am extremely paranoid about my own PC (I have Bitdefender on it, but I watch a lot of virus testing videos and I get really paranoid when I'm not beside checking my PC at all times so it doesn't have a virus. I also run a weekly 3-hour scan on Friday every week. And since I cannot download Bitdefender on my chrome OS I want to download Avast, but I'm not sure how to, because if I download it for PC it won't work, the same for android, ios, and mac. So, I'm not sure how I'm supposed to get the anti-virus on my Chrome OS, any advice?