iMovie update failure on MacOS Sequioa 15.0.1
Hello! I recently updated by macbook pro to MacOS Sequioa 15.0.1. Turns out, my iMovie version is pretty old (10.3.5) and is not compatible with my current OS. It says I have to update iMovie before I am able to use it again, and it has a giant white 'prohibition' symbol over the icon. However, when I tried to update the app, it tells me that it could not download the update. I have tried to update the app over and over again, but it tells me the same thing every time. I have tried to move iMovie to the trash can, but I got a popup saying that iMovie cannot be moved to the trash because it needs to be updated. I've also tried to uninstall iMovie from the app store, but the 'delete app' button doesn't do anything. Please help me fix this, I really need access to iMovie.
[Re-Titled by Moderator]
MacBook Pro 13″, macOS 15.0