when ever I open any web browser I have ad choices and cloud scout pop ups or adds. I did factory reset it. It seems to work for a day or two and after that they all come back again they jump around specially when I search for how to remove cloud scout on Google I suddenly get bombarded with them. I scanned it using malware bytes and I avast . they detected nothing. now only on Firefox seems to be ok because I downloaded adblock plus. so I'm not sure what's happening
That's mostly nasty Ads by the websites.This is why people use Ad Blocker now a days. Few websites are over loaded with Ads.
I can see you already installed Adblock Plus. So you are good for now. Few other options you might try
1. Use UC Browser. It has integrated Ad Blocker.
2. If can set your DNS to open dns and block all Ad Domains.
3. You can install software like Block It and configure it do block Ads.