Safari won't open any website - Chrome is not working properly

1. Power off the router. Unplug it from the wall. Wait a while.

    Plug it back in. Power the router on. Wait until all lights are lit properly. It will take a while.

    Restart the computer and test.

2.  Start up in Safe Mode.

    Once in Safe Mode, launch Safari and Chrome to test.

After testing click the “Restart” button at the bottom.

    https://support.apple.com/en-us/HT201262

Does Safari work properly in Safe Mode.

3. If Safari doesn’t open a window

    https://support.apple.com/guide/safari/if-you-cant-open-a-safari-window-ibrw1077/mac

   4. Download EtreCheck: https://etrecheck.com/maspro  and post the report here,

if the steps posted above don't help.

      Click, “Free Download” button and then  “Click to download” button,

      open Downloads folder, click on it to open, and then select ”Open”.

      Click on the bouncing  EtreCheck icon in the Dock.

      “Choose a problem” from the popup menu box, and then “Start EtreCheck” in the dialog.

      Click “Share Report” button in the toolbar, select “Copy to Clipboard” .

      Paste the report when you reply.

You can also try setting up another admin user account to see if the same problem continues. If Back-to-My Mac is selected in System Preferences, the Guest account will not work. The intent is to see if it is specific to one account or a system wide problem. This account can be deleted later.

Isolating an issue by using another user account