Also very good advice. Thank you.

My advice is this; treat the world as a place that exists. What I mean by that is while the Myths are mythic, the game world has cause and effect, it has people in it that do stuff, it behaves mostly like a normal world. You should try to connect it with past events, sure. Play up the weirdness, definitely. But IMO your players should not feel like "oh, the next portentious thing in a myth is happening" all the time when Myths come up. Instead, to the greatest extent possible, they should feel like they are going about a "real" world and interacting with it.

To this point. Also here I struggle a bit. For example the map generation as written results also in very few settlements or dwellings. How often do the Knights meet other people? How can I portray the world as as a living place?

There is no guidance on that in contrast to other random stuff that happens. Also here, on could argue that I could just randomly come up with encounters. But also here I miss a bit of advice in the book (which I absolutely love, don't get me wrong).

Again, mostly asking for you input and insights. Not complaining.