Some apps are difficult to remove.
Bubble Launcher Screenlock is one of these apps you realy need to take time for and take 1-2-3 steps to terminate to a total quite and then delete the app to remove it from your device.
Step 1. See pictures in this post from bottom to top. HOW TO TERMINATE THE APP ..
How to stop :
BUBBLE LAUNCHER SCREENLOCK
You need to get acces to your standard launchers... there is a link for this in your phone settings.
See :Standard applications /
Standaard Applicaties & START
Push : Start and see the different launchers you have.
Turn the device manager off ...
You can not delete it at once.
First you need to end and disable the launcher in this link START.
So now disable it ... ( TURN OFF )
END THE DEVICE MANAGER ...
then go back to delete it with the bin button.