Ads coming up everywhere with an app i cant find

[Android Central Question]

I installed this car wallpapers app and uninstalled it. Ever since then I was getting these small square shaped ads on the screen everywhere no matter what app I'm in even on the home screen. When it popped up i pressed the button to see all apps open. It was a window with two overlaying rectangles. And when it happens the bar at the top that tells you the time internet and charge left disappears. If it helps I am on android 8.0.0

 

[B. Diddy]

Welcome to Android Central! Go to the Settings>Apps menu and look for any unusual apps that might have gotten installed along with that app.