My Safari stop working after few minutes of browsing. I have to turn off and turn my laptop again to get another few minutes of browsing. Also I have noticed when browsing from google it is reroute me to Yahoo search and shows safe finder Icon

You have adware/malware installed. Use  Malwarebytes Anti-Malware for Mac. It may be necessary to run more than one scan. After scanning a couple of times, restart the computer and test. If necessary, follow the manual instructions.  Do not download any other programs that are listed in the articles.  

See if the below helps. I would scroll down to the below or you might fall asleep.

Step 1. Eliminate Yahoo Redirect from Windows

Step 2. Delete Yahoo Redirect from Mac OS X

Step 3. Uninstall Yahoo Redirect from Internet Explorer

Step 4. Remove Yahoo Redirect from Microsoft Edge

Step 5. Erase Yahoo Redirect from Mozilla Firefox

Step 6. Get rid of Yahoo Redirect from Google Chrome

Step 7. Eliminate Yahoo Redirect from Safari

https://www.2-spyware.com/remove-yahoo-redirect-virus.html

Safe Finder Uninstall

Safe Finder Uninstall (2)

Safe Finder Uninstall (3)

Go to Safari Preferences/Extensions, uninstall any you don't recognize, and then turn all extensions off. Test. If okay, turn the extensions on one by one until you figure out what extension is causing the problem.

You are welcome.