Feed the beast shaders in 2020

[Rozzatron]

I am having trouble adding shaders to it a don't now how to add them is it because minecraft i have is 1.16.4 our is it because a am using Optifine on my minecraft, feed the bestie on 1.12.2 is that it . Please help

 

[Lodberg]

^you can use the olderversion of shaders,

You can use https://bitslablab.com/bslshaders/ If you install the "CORRECT" Optifine version from here https://optifine.net/downloads