ipad pro keeps crashing

My iPad Pro (2018) keeps crashing. It shows 100% charged and when I attempt to open it, it has a black screen reflecting no battery. I have used the Logitech smart keyboard for years and think maybe this is the problem. However, it has been out of the case all day and still crashes. I deleted a lot of apps that were downloaded when I loaded them on my iPhone. I have Googled reset and charging. Just kinda at loss.