iPad screen cracked & not responding correcttly

My iPad Pro 4 th Gen. with Retina screen had been acting strangely: very slow to start up and then going dark and seeming to shut down when I tried to slide the power-slide on. Sometimes when I tried to enter my pass code, it wouldn't allow me to type and then it would fo black and seem to shut down. Other times, it just takes a long time t take the code and load, and it would then load if I clicked the home button. At other times, I can't swipe on the screen. On the other hand, sometimes it starts up just fine.

I got tired of this and took off my pad cover. Then I found a corner of the screen shattered, with what appears to be some fine cracks down the screen. Apparently I must have dropped it sometime, and it landed exactly on the corner. Guess I'm glad it was in its case!

I'm not ready to buy a new iPad, and I'd hate to spend anywhere from $150 to $300 to repair it if ther eis something else going on. Obviously the screen needs replacing, but what else, if at all, should I do?