Is it normal that I have so many Ubuntu 18.04 Filesystems?

Question

linux

I installed Ubuntu 18.04, it was 16.04, there were all 5 or 6 file systems, and now this is how many:

This is normal, why was there less in 16.04?
My disk is 1 SSD 256 GB

Answer 1

As far as I understood from my acquaintance with this version of Ubuntu, each installed snap package is installed in the manner of Docker containers, and has "its own file system" and is mounted in this way. Not claiming to be true, just speculation.

Answer 2

This is fine.
Here are virtual partitions and physical disks
Here are only physical disks (except for the first three)