OK.
So... file extensions are arbitrary. A developer could call his game asset file ".doc" if he wanted. Just because this is a "bin" file doesn't mean anything.
However there are some conventions in the wild west world of programming. And it is a convention that "bin" means "arbitrary binary data".
Presumably there is some structure in there. But unless you know the game engine, and that game engine has a known file format, then you're likely in trouble.
Having said that, for simplicity sake as a developer, it's possible the "bin" files are just many image datas all concatenated together. I've seen some people use tools to try to explore the content of unknown files. But it's also possible even if it contains image,s the image formats are not something that can be directly displayed like jpg or png.
Or it might actually be a bunch of separate files all compressed together with some simple algorithm like gz.
If you want to solve your puzzle, try to work out the game engine used, then look for specific unpacker tools for that engine.
This thread might help you:
https://f95zone.to/threads/universal-ripping-tutorial-for-game-contents.39350/