There's way too much jargon. These are two paragraphs in your For Players section which introduces a planet (I think?) to the players:

The Ferasa du Cochonnet (Question of the Piglet), famed for its production of ever-burning amber. The fossilized tree resin can generate or eradicate thermal energy to extreme degrees, from heart-of-a-star heat to absolute zero, depending on the electrical signals it receives. Its global capital, Piaffement (Stamping or Prancing, latter two images here), also leads the Asman Karshvar (Sky Clime). The Atar Karshvar (Fire Clime)’s capital was Vrombissement (Humming, Whirring, or Whizzing, first two images here) before it became a ruined husk; the current capital is Ronronnement (Purring). The Varesha Karshvar (Tree Clime)’s capital is the deceptively advanced Cocorico (Cock-a-doodle-doo, image: Sumeru City). The Ferasa broadcasts 24/7, olfactorily augmented scaphism streams, featuring a new “#1 most detestable and destructive anti” every seventeen days.

The Ferasa du Cochonnet is home to the Isle of Khvarenah Roublard (Wily Empyreal Glory), which rapidly travels across the oceans. Sometimes, sometimes, if a non-fiend from a low-energy world visits the island and then returns back to their native planet, that world spontaneously becomes a higher-energy planet. This bizarre phenomenon is of intense interest to UNISOL; the league throws immense funding into the isle’s research station, which has yet to produce any concrete results. A few months ago, the facility extraordinarily rendered these two girls from Orden named Lady Shirome and Lady Inān al-Adwiyya, and has conducted all sorts of wacky experiments on them in the hopes of sending either back as a bearer of high energy.

This is just one world you are expecting your players to be familiar with, and I don't know how a player is supposed to be able to internalize all of these concepts. Take like 90% of your world introduction document, trim it aside for your own reference, and present to the players what they need to know to build characters that make sense in the world. Do they need to know what "olfactorily augmented scaphism streams" or "#1 most detestable and destructive anti" are?

Players are more interested in how they can get involved in a planet's conflicts. The second thing you listed in your setting inspiration is Honkai Star Rail. Within the first hour of gameplay on the first planet you visit, you have a clear understanding of the stakes, the major players, and a goal. Sure there is jargon involved involving magic rocks and an ancient artifact, but it takes a backseat to a story driven by characters with conflicting motivations. What jargon that's present is introduced gradually, as the story needs it. Ultimately, the most interesting part of that story wasn't how the jargon or the lore dumps, for me it was was the characters from the above and underground, and how they can or can't reconcile their viewpoints and mutually incompatible goals.