I freed 30GB using Filelight

Clean all the cache downloads of Arch Linux Packages

pacman -Scc

Remove unused docker networks and images

docker system prune --all

Cleanup untracked git files that might be in .gitignore such as build and out directories (beware of losing data, use "n" instead of "f" for a dry run)

git clean -xdf

Do an aggresive pruning of objects in git (MIGHT BE VERY SLOW)

git gc --aggressive --prune=now

Remove old journal logs, keeping last seven days

journalctl --vacuum-time 7days

Remove pip cache

pip cache purge