Specifically, the "install" button remains stuck on "waiting on install" without the launcher downloading the necessary game files/folders.

If you see Minecraft failed to download file, The file contents differ from what was expected in Minecraft launcher, use these fixes ...

Many Minecraft players seem to be bothered by the Java(™) Platform SE binary error. It can lead to the game freezing midway or not even starting up.

If Minecraft Installer or Updater is stuck on downloading files or resources on Windows 11/10, see this post for swift & effective resolution.