package pmount (not installed) failed to install/upgrade: unable to clean up mess surrounding './etc/bash_completion.d/pmount' before installing another version: Read-only file system

[Gonzalo Valdivieso Sarasola]

i was very happy until i installed wine and playonlinux to get some windows apps that i need.. i turned it off, go to sleep, wake up, start again athis is what happen:
1- when the machine starts, before login section, a lot of code in black screen. Telling something like "error", "not found", things like that
2- after that, the login was rare, too big scaled
3- when it opens up my session, everything is out of scale, too big. I try to settings/Display, but only 640 x 480 (4:3) is available
4- now everything sucks (sorry), i can not save some files in pendrive, because it is no "mounted point"
5- i do the backup thing, just 2 days ago... when i was in the peak of my happiness, but when i "restore" it, just said everything was ok, etc, but nothing happens

ASK: is there a way to protect the system to make mistakes ?
i ask this because, there is a lot of potential linux users, who do not get it because they dont even try, but there is a lot of new users, who really do not code anything, and the only way is to get some tutorials, etc and follow the steps. I understand that this steps are made by people in there own system, and they do not have to know/match with mine. In my last try with ubuntu, a few years ago (14.08 i think) this was my most hard thing to survive with, because in that time, i had to run cuda from nvidia, for the graphics, and everything goes to hell too.

I will reset everything again, i like Linux, but i do not want to study 5 years to put it on my way.. i really hate windows, but the industry takes you there, and that is so hatefull.. and mac, do a great job, but 4 of 5 mac-men are really assholes with washed brains

Thanks for your time
Have a nice day
Keep on going
I will try again

PD: im on ubuntu 20.04

ProblemType: Package
DistroRelease: Ubuntu 20.04
Package: pmount (not installed)
Uname: Linux 5.6.0-19.1-liquorix-amd64 x86_64
ApportVersion: 2.20.11-0ubuntu27.2
AptOrdering:
 pmount:amd64: Install
 NULL: ConfigurePending
Architecture: amd64
CasperMD5CheckResult: skip
Date: Thu Jun 18 17:31:18 2020
DpkgTerminalLog:
 Preparing to unpack .../pmount_0.9.23-3build1_amd64.deb ...
 Unpacking pmount (0.9.23-3build1) ...
 dpkg: error processing archive /var/cache/apt/archives/pmount_0.9.23-3build1_amd64.deb (--unpack):
  unable to clean up mess surrounding './etc/bash_completion.d/pmount' before installing another version: Read-only file system
DuplicateSignature:
 package:pmount:(not installed)
 Unpacking pmount (0.9.23-3build1) ...
 dpkg: error processing archive /var/cache/apt/archives/pmount_0.9.23-3build1_amd64.deb (--unpack):
  unable to clean up mess surrounding './etc/bash_completion.d/pmount' before installing another version: Read-only file system
ErrorMessage: unable to clean up mess surrounding './etc/bash_completion.d/pmount' before installing another version: Read-only file system
InstallationDate: Installed on 2020-06-16 (2 days ago)
InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
Python3Details: /usr/bin/python3.8, Python 3.8.2, python3-minimal, 3.8.2-0ubuntu2
PythonDetails: N/A
RelatedPackageVersions:
 dpkg 1.19.7ubuntu3
 apt 2.0.2ubuntu0.1
SourcePackage: pmount
Title: package pmount (not installed) failed to install/upgrade: unable to clean up mess surrounding './etc/bash_completion.d/pmount' before installing another version: Read-only file system
UpgradeStatus: No upgrade log present (probably fresh install)