I installed ubuntu 19.04 20 days ago. My root partition has a size of 20gb and it is almost full. Here is what Disk usage analyzer outputs. According to dua the folder /usr/lib is taking up the most space. I tried cleaning up with apt (clean,autoclean,autoremove),with bleachbit, removing old snap versions, general suggestions but have still little space left.
Should I resize my root partition?
Edit: After running dua as root I got a better view of what takes up space. /root/.cache takes up 4.8GB and /var/lib/snapd/cache take up 1.2GB. What are those folders?