Uninstalling Avast!

I recently decided to uninstall
From my computer. When i do this however, it says “There was an error during uninstallation”, then it has the “Finish” button. It’s still installed. I’ve looked on the website, and there is an uninstallation tool, but you have to run windows in “Safe mode”. Apparently, I wouldn’t be able to do this on my own though.

Do any of you know how i could uninstall Avast?