I can't get webpages to load on safari as of yesterday. What can I do to fix this problem?

1. If Safari doesn't open a webpage or isn’t working as expected

    Try suggestions given in these articles. 

    https://support.apple.com/en-us/HT204098

https://support.apple.com/guide/safari/if-you-cant-open-a-website-ibrw1071/mac

2. Quit Safari, launch Safari holding the Shift key down.

3. Startup in Safe Mode. https://support.apple.com/guide/mac-help/start-up-your-mac-in-safe-mode-mh21245/mac.  

    Quote:

    It also does a basic check of your startup disk, similar to using First Aid in Disk Utility. 

    And it deletes some system caches, including font caches and 

    the kernel cache, which are automatically created again as needed.

    Login to your account and test the site.

    If the site loads without any issue, third party software like VPN or anti-virus software may be the issue.

    Logout and restart your Mac.