Greek: Ναι (ne) means yes. Greeks often move their head up and down to say yes.
Bulgarian: Не (ne) means no. Bulgarians often move their head up and down to say no.
So if someone says ne and moves their head up and down it could be a Greek saying yes or a Bulgarian saying no. In reality the movements are not the same but it would probably be confusing to an outsider.
Some ideas:
I haven’t tried learning Japanese (precisely because of Kanji) but what you’re describing in English is also the hardest part of English. There are plenty of languages where you can easily spell and pronounce words you’ve never seen before.
Equatorial guinea and the Philippines would like a word.
Sadly your sleep schedule will probably also relocate. The trick is to stay where you are and get a remote job from a place that uses your internal time zone.
If it’s something specific like what you mentioned, just search for relevant articles with lists of recommendations. For more general themes you can go to goodreads (or similar), find some reviews you agree with on other books you liked and see what else the reviewers liked. Or do the same with people you know if you have similar tastes. You would think LLMs would be good at recommending books but every time I’ve tried with chatgpt the results were pretty bad but YMMV.
You might be onto something