I can’t clear my history on Safari!

I can’t clear my history on Safari. It is very irritating because I know how to but the “clear” button is grayed out and I cant push it. I cleared everything in settings, but when i search things that I accidentally searched before pop up. I don’t understand why I cannot clear history when I push the bookmark button, and it is really annoying that it is grayed out. I tried looking it up, everything all the websites say to do are from a long time ago and they do not work, like when you go to General in Settings, there is supposed to be a button that says “Restrictions”, but there isn’t anymore. Please help me!