I ran into a problem like this once, and after banging my head against the wall for days it turned out the solution was just running

sudo apt autoremove

That took care of removing a bunch of old stuff in the boot partition that I will not pretend to understand.

My sister and my soon to be wife

Roll tide

As far as I know, the current best practice for language learning is called Krashen’s Hypothesis or Comprehensible Input. Basically, we can learn a language best by hearing words that are slightly more complicated than what we already know. I am learning Korean and there is a nice YouTube channel where a guy makes videos of himself playing games and he talks about what’s on the screen at different levels of complexity. You could look for something like that in the language you want to learn.