If you want to change the lighting model in the game for the better and change the appearance of textures to more realistic ones, then install the Ultra Kernel shaders for Minecraft. These are very interesting and unusual shaders, which were made on the basis of one popular project, which never saw the light of day, since the developers curtailed all work. Thanks to these shaders, the game world will look very beautiful and realistic, making it much more interesting to play.
These shaders will change almost all graphic elements in the game, including some effects. Thanks to them, the sky, water and even sunlight will look much better.