How to make Microsoft Edge go to sleep

I recently installed Windows ten in an older Toshiba Satellite P755=S5182 laptop. I have done this installation many times before and thought I had turned off most of the annoyances. I installed drivers and updates and a few programs ie, Chome , Acrobat Reader, etc. When I insert a USB flash drive and File Explorer opens, Up Pops Microsoft Edge with numerous tabs offering "help with using File Explorer". I have already set Chrome as the default browser but I must have missed something in the settings. Anyone have ideas about what to turn off?
Mahalo for your help.