I currently have 17 GB free space on my root drive, out of 0.47 TB usable space, that’s 3% free space. I also have an additional harddrive installed, 12 TB, it has 140 GB free, which may seem a lot but it’s actually only about 1%. Your harddrive is probably pretty full too. Maybe not as crammed, but odds are it’s probably closer to full than empty. I ran a poll on mastodon and approximately half of the respondents, counting 81 people in total, had a harddrive that was more than 75% full.