In recent days, mcafee antivirus has repeatedly blocked Chrome claiming that the browser is trying to connect to dangerous sites. And today I did not find the chrome browser icon on the desktop, it looks like the mcafee just deleted chrome.
It looks like your browser is infected with a virus (malicious extension). You need to carefully review the list of extensions and remove any suspicious ones. You can simply disable all extensions and turn them on one by one to find the malicious extension. I also recommend resetting your browser settings.
More details can be found in the following instructions: https://www.myantispyware.com/2017/02/19/how-to-remove-pop-up-ads-chrome-firefox-ie-opera-edge/