If you’ve tried Hyperspace but haven’t found much space to reclaim, check out this FAQ item for some tips: https://hypercritical.co/hyperspace/#find-more
Hyperspace

@siracusa With settings optimized for that, I'm finding 104 GB. Substantial, but I'm hesitant to purchase with no idea what kind of things it found. I’d like to see a summary that's more than a single number.
@maikm Making a purchase to unlock the app will show you the list of files and let you choose which ones you do and don't want to reclaim.
@siracusa Yes, but I'm not sure I want to “purchase to reclaim" just to see what kind of things it actually found, and then maybe not reclaim it after all.