Quicktime Player

Last night, I plugged in my hub port adapter in hopes to transfer some video files from my SD card for my camera onto my Macbook. It opened up QuickTime Player for me to view my video files. I had attempted to save a copy of it by using '⌘ - Shift - S,' and the spinning beach ball of death shows up. So I waited for the mechanics to figure out—but nothing. QuickTime Player closes out, and now every time I try to open QuickTime Player or try to open up video files, I get an error message.

I attempted to drag the QuickTime Player application into the Trash to remove in hopes to reinstall it, but it won't even go into the trash anymore. Is there anything I can do to fix this?

P.S. I recently purchased the latest 2020 Macbook Pro (A2251).