my safari doesn't work anymore how do I reload it?

I understand Safari is not working. For example, does it not load any web pages?

Start with If Safari doesn't open a page or work as expected on your Mac - Apple Support.

Needless to say, if you are using any non-Apple "anti-virus", "cleaning", or "Internet security" products including "banking security", anything at all in that broad category of utterly useless garbage, don't. A lot of things won't work if you do.