Issues with Safari on Mojave 10.14.5

Try setting up another admin user account to see if the same problem continues. Please post back on whether or not this worked. Also try the Safe Mode. Please post back on whether or not this worked.

Isolating an issue by using another user account 

Safe Mode - About

If it works in the Safe Mode, try running this program when booted normally and then copy and paste the output in a reply. The program was created by Etresoft, a frequent contributor.  Please use copy and paste as screen shots can be hard to read. Click “Share Report” button in the toolbar, select “Copy to Clipboard” and then paste into a reply. This will show what is running on your computer. No personal information is shown. If the log won’t post, try posting it in Pastebin and provide a link in a reply        Pastebin

Etrecheck – System Information

Try Eric Root’s idea about the New Administrator Account. It’s an excellent suggestion, being that it isolates issues. If Safari works with the new account, then something is misconfigured in your current user.

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Etresoft: Post its Results so it can be reviewed.

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For Common Configuration Issues:

RESET YOUR SMC and NVRAM

• Reset the SMC
• Reset the NVRAM

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As a Last Resort

Also, reinstall the MacOS. Nothing would be deleted, it’s just anything that is “mis-configured” or has been removed, will be reinstalled. Go Here: How to reinstall macOS from macOS Recovery - Apple Support Note: Back up your Mac with Time Machine prior to this.

Try Clearing Your Temporary Internet Files: History and Cache

Rid of this entire set of data, and Safari should be like new..

I tried this and it didn’t work....