DOES THE HOLLOW EARTH ACTUALLY EXIST?

Is there any chance both hypothetically and theoretically that hollow earth can exist? Maybe not as fantastical as movies portray them with a jungle landscape where prehistoric animals live, but something like the deep ocean where large marine animals live there, but much much deeper than the Mariane Trench?

When I think of "hollow earth" I think of vast networks of deep, expansive underground cave systems. But the "popular" conception we see in movies and conspiracy theories I often feel has been intentionally exaggerated as the Earth being *literally* entirely hollow, which makes the idea - and even nuanced discussion - seem ridiculous.

Just the top-most layer of the planet (the crust) by itself extends 20 miles down (18 miles deeper than the ocean), yet that layer of rock makes up less than 1% of the planet's internal volume. We learn all the time that life finds a way to grow in even the most extreme environments. Anything could have adapted to live down there closer to the core where heat is easy to come by and space for cavities and caverns to form is functionally endless.

There have been massive caves and tunnels discovered in the Earth's crust over the years, and I imagine there's plenty yet to be found. Modern science and academia, at least how it manifests to the general public, usually seems to always think that whatever their current understanding is of reality is the absolute state of things. We didn't believe life was possible in the deepest depths of the ocean until hydrothermal vents and chemosynthesis based food chains were discovered.

Our technology is pretty good these days so I don't doubt that the planet's core is at least close to what is generally accepted, but I wouldn't be surprised if we found way more and more extensive cave systems within the crust than previously estimated. Underground rivers and springs can carve out insane spaces and life finds a way. It may be filled with water, toxic gases, strange and small flora and fauna, or maybe the Ant people and Hyperborians are chilling in underground crystal cities with antigravity tech. I doubt it but who knows...