How to restart an app on a Philips Android TV?

It happens every now and then that an app crashes on my Philips 65PUS9006 Android TV. The problem is that I haven't found a way to restart the app from the Philips TV Remote. - Is there a way to restart an app on a Philips Android TV with the help of the TV remote only? - Alt, is there a way to completely restart Android on a Philips Android TV with the help of the TV remote only? *I don't want to have to pull the plug out of the power outlet (like I have been doing so far), just to be able to restart an app that is not responding anymore.*