IDK but this started happening today and I don't know why. I was going on YouTube watching some Fortnite and then I see a ad. It's not your normal Youtube ad, it's the add that covers up your whole screen saying to "download now" or "spin to get _________ dollars" thing. Sometimes it even directs me to Google with a another ad. I tried downloading a virus scanner but it couldn't find anything. If you guys have any insight please comment.