Summarize:

You'll find it at the bottom-left corner of the Start menu. It's on the right side of the window. It's in the right panel under the "Apps & features" header. You should now see your AVG AntiVirus app below the search bar. It's below the search bar. Some buttons will appear. A confirmation window will appear. This opens the AVG AntiVirus uninstaller. You'll be asked to enter some details about why you're choosing to remove the app from your computer. Your answers will be sent to AVG to help improve their product.
Open your Windows Settings . Click Apps. Type avg into the "Search this list" bar. Click AVG AntiVirus. Click Uninstall. Click Uninstall to confirm. Follow the on-screen instructions to uninstall AVG.