Default Log In and Registration

Hello, hope you’re all well. I am a little bit stuck and was hoping someone can help me out, I’m sure it’s easy I just can’t figure it out. Basically I was using Pie Register plugin to replace the default Login and Registration pages and now would like to switch back to the default ones but cannot find how. Tried creating new pages and looking for some templates or so, but cannot seem to find anything. Hope someone can help.