I opened a site on my browser by accident now I can’t access any of my previous pages. How do I get rid of this page that says I have a possible virus? It says I must contact apple.

Sorry, I believe I missed a step. Follow my procedure as outlined above, to force quite Safari, then go to: Settings - Safari - Clear WebSite History and Data.

Now restart Safari.

Double tap the home button to reveal the "Recently Used" apps, then swipe upwards on Safari (or other browser you may have been using). Tap the Home button again, then restart your browser.

You’re quite welcome.