I did what I wrote above and was able to remove the LO packages at least again so that they stopped blocking my future installations. I reinstalled now libre office again and it worked (??) and up to now everything seems to run smooth.
I did what I wrote above and was able to remove the LO packages at least again so that they stopped blocking my future installations. I reinstalled now libre office again and it worked (??) and up to now everything seems to run smooth.