Start blocking invasive ads that take over the browser

I want to use Chrome and in some cases I need to use Chrome because so much of my data belongs in the Google ecosystem. However, when browsing I will occasionally run into the you have won a special Google contest full app takeover or your phone has a virus. There seems to be no way out of this. And this happens on normal regular websites while trying to access stories and news. There is no way to back out. The only option Ive run into is to uninstall Chrome and start over from scratch. Google you cant stop this? A less reputable advertiser or scammer has the ability to render your browser unusable? This happened as an Android user and now an iPhone user. Not acceptable.

Art and Grace about Google Chrome – The Fast and Secure Web Browser, v59.0.3071.