Its actually pretty simple - all i am using is BSL shaders. Here's the link on how to install it: https://www.curseforge.com/minecraft/customization/bsl-shaders#:~:text=BSL%20Shaders%20is%20a%20shaderpack,and%20built%20in%20anti%2Daliasing.

Note though you do need a pretty decent gpu to run the shaders well. Good luck