More information about clearing the cache in Safari can be found here:
https://support.apple.com/guide/safari/clear-your-browsing-history-sfri47acf5d6/mac
Windows: n.a.
Mac: History > Clear History
Ctrl = Control key
Shift = Shift key
Del = Delete key
= Apple Command Key
If you don't see Develop in your menu options, you can enable it by Clicking on Safari, then Preferences, and then Advanced. Select Show Develop menu in menu bar.