Safari opening new tab when searching in Google - malware, and how to get rid of it?

• Verify that there are no Extensions installed at Safari > Settings > Extensions
• Run the free version of MalwareBytes. Only the free scan is needed and there is no need to subscribe to constant monitoring. https://www.malwarebytes.com
• Check out the John Galt article and post the screen shots suggested.

Removing "Search Marquis" / "Search Baron… - Apple Community

MalwareBytes will remove the most common Malware problems automatically when downloading the free scan, but you can skip to the last point and post the screen shots from the Support Article by John Galt. We will then be able to tell you what files you need to remove from those locations and it will eliminate the problem.

Me too. I changed default search engine??