When trying to setup my space bar to jump. However, when clicking on binding->path, the dropdown menu is completely empty. When I manually type in Space [Keyboard] it still doesnt work.
Is there something else I can type in, or any workaround?
Have you already tried to restart Unity? If so, you might be experiencing a bug. If there is no update, report a bug to Unity via Help > Report a bug.
Then make a backup of your project folder by duplicating it. Save the duplicated folder somewhere else, maybe on an USB stick. To save some free space, you could delete the Library and Temp folders in the backup folder.
Install an older version of Unity or Unity 2022. Import your project but not the backup.