Horrible crashing issues

The app crashes and freezes up. Doesnt show my notifications correctly. Does not update my notifications. Does not load the page and the sort on the news feed doesnt appear all the time. The sound does not work. It will start with sound then there is no sound. The videos cant be clicked on. There are so many problems with this new update. And why is this app taking up so much room?

AlC1990 about Facebook, v84.0