I freed 30GB using Filelight

I'm here to promote fclones. I've used it twice and recovered over a terabyte on my NAS the last time I used it. I'm not affiliated. Hyperspace for Mac is similar (but different) and I haven't used it, but it was developed by my favorite nerd podcast host. I'm planning to test it out eventually, but the latest fclones run was only about a month ago, so it doesn't make sense to try it yet.