I just compared my own work to some other Latest Series work... and they immediately have some favorites and numbers of "Plan To Read". Even it is written by just newly-registered author, and they just get two-digits on Readers count.
I don't know why, but the reason for writing a 10k word chapter is because I want to introduce my latest series as an epic with lots of occurrences around the world... and perhaps I might turn off a lot of potential readers with short attention span.
I took a peek at your prologue. It was frankly shit, and it's not because of the length of the chapter. It's because you keep head-jumping and this makes it so the reader cannot get invested in any one character, and every scenario you present is shallow and uninteresting.
You say you want to present an epic world that is vast with several things going on. What I saw was a whole lot of confusing nothing going on, and that became extremely off-putting.
This looks to me like terminal world-builder syndrome. You built up your world and you want to present the world to your readers, but you forgot the most important point to all of this. You are absolutely failing at presenting a story.
You're going to need to back off with the world building and present us with a single character and let the reader know why it is we're supposed to care about that character within the first 5 seconds of opening the prologue. And then, after you have successfully pulled that off, you need to stick with that one character and only that character for a minimum of 10K words worth of story content. Only after sticking with that single character for 10K words, you can maybe head-jump to another character for around 2K words (preferably less), but then you have to return to that character you started with.
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Also, learn how to world build by subtlety. Don't shove it in the reader's face. I do my own world building by way of slow and methodical culture building. I present a group of people, slowly work my way through the cultural norms of this group of people, use that culture to spring-board into a part of the threat being faced by the main cast (creating a man Vs. society conflict), and have the conflict resolved. I don't specifically focus on the greater world-building, but the culture is a reaction to the world, so the reader is able to take a lot of implications as to what the world must be like just by seeing a single isolated culture within the greater world. And then, I repeat the entire process all over again by introducing another facet of society.
Ascendance of a Bookworm is known for being the absolute crowning modern-day example of a fantasy story with deep and very involved world-building. The way that series did it's world building is the EXACT method I just described. Same for other famous series like Mushoku Tensei. They start small in isolation, just showing the smallest little bit of the world that's relevant to the MC of the story, before slowly expanding the reader's view of the world. They let the reader discover the world at the same rate as the MC (thus part of the reason the Isekai genre lends itself so well to world-building), and this allows the reader to become so much more immersed in the world.
EDIT: A good example of a non-isekai series that also has truly excellent and deep world-building would be Avatar the Last Airbender. It also does the world building by subtlety approach well, using the culture craft presentation as well as some rather subtle visual world-building, especially during part 2, with the episode called "Zuko Alone" being one of the best examples of visual world-building as Zuko walks down a trail and in the background you see several stone wheels that you have previously seen earth-benders throwing around as weapons. This shows there was a battle here at some point without anyone ever having to say it. Just the visuals alone are enough for the viewer to understand it and fill in the gaps.
(That's another high-tier world-building trick. World building by what isn't said.)
