how do I reinstall safari?

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

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

I can answer your question.The way Safari is updated is by upgrading your computer's software. An upgrade is when you install a newer OS version, such as upgrading from Catalina to Big Sur. An update is to install a newer version of the same operating system. The reason for this is because Safari is installed as part of the operating system. It cannot be deleted or individually installed. Incidentally, a newer version of Safari does not always work with every web site. Sometimes it is necessary to install another browser such as Firefox or one of the many browsers available from the Apple App Store to use with certain web sites. They are individually installed and upgraded.

So, you can consider upgrading your operating system or reinstalling the OS to reinstall Safari.

Dominic23 did not answer the question. I have read and tried everything in the link regarding webpages not opening or working as expected.

Can someone please answer "How do I delete & reinstall Safari"? Surely there is a way to get a fresh install of Safari.

It is true that Safari is problematic for some computers. That is why many of us use alternative browsers as needed. There are a number of very good ones out there to choose from.

Thank you Ronasara, it is helpful to know that the only way to install a fresh install of Safari is to reinstall the OS. I would like to use Safari, but I will resort to using Google's browser since Apple's browser does not work on my Apple computer.