I wan to report back to that point, I got a greater mSATA
with 256 GB space and were installing all partitions once more again, and now all is fine for me, with no hassle or
problems running out of space.
frank@lankeeper:~$ sudo lsblk -o NAME,FSTYPE,SIZE,MOUNTPOINT,LABEL
NAME FSTYPE SIZE MOUNTPOINT LABEL
loop0 squashfs 63.3M /snap/core20/1822
loop1 squashfs 111.9M /snap/lxd/24322
loop2 squashfs 49.8M /snap/snapd/18357
loop3 squashfs 116.8M /snap/core/14946
loop4 squashfs 9.6M /snap/canonical-livepatch/209
sda 238.5G
├─sda1 1M
├─sda2 btrfs 5G /boot
├─sda3 ext4 20G /
├─sda4 ext4 20G /home
├─sda5 ext4 20G /srv
├─sda6 ext4 20G /usr
├─sda7 ext4 20G /var
├─sda8 ext4 20G /var/lib
├─sda9 ext4 20G /usr/local
├─sda10 ext4 20G /srv/www
├─sda11 ext4 20G /srv/ftp
├─sda12 ext4 20G /srv/rsync
├─sda13 ext4 15G /tmp
├─sda14 swap 4G [SWAP]
└─sda15 ext4 14.5G /var/tmp