Shaders missing in build

So I'm working on a VR game for the oculus quest using Unity 2020.3.6f1 and have gotten to a point where I am pretty happy with the look in unity. But when I exported it to standalone a lot of shaders were missing, the particle systems, the linerenderers and the UI were all gone. 

I searched a little and found that putting the associated shaders in the Graphics -> Always Included Shaders, but either the shader can't be added because it doesn't show up in the to-add list and can't be dragged in, or it has to many variants and I need to remove it. 

Help would be greatly appreciated! Thank you!