safari wont open😔

After Eric's Malwarebytes suggestion, do the following:

1. Press and hold the shift key while you launch Safari.
2. Clear History… : all history. This will clear history and all set cookies in the browser (if Safari 12).
3. In Safari Preferences
   1. Advanced
      1. [√] Show Develop menu in menu bar
      2. Press option + command + E to clear your browser cache
   2. Extensions
      1. Disable all extensions
4. Quit Safari
5. Relaunch normally

Any change?

Have you tried shutting down the computer using the power button and then restarting?

You may  have adware/malware installed. Try downloading this program which was written by Thomas R, a long time poster. The program will search for malware/adware. The program will do the work for you which makes it easy. It may be necessary to run more than one scan. After running the scans, restart the computer.

Malwarebytes Anti-Malware for Mac      10.10 and later

Malwarebytes uninstall