Saved by batching 0

I want to optimize many objects, prefab and mesh one, material one, standard lit material, GPU Instancing enabled, but saved by batching 0.

I tried to disable GPU Instancing and mark objects as static (disabled instancing when static because they do not work together), but the packages still do not merge.

I do not understand, in all the videos that I watched on YouTube everything is simple, turn on GPU Instancing and that’s it, the packages are merged and performance increases, but I can not do it …

what am i missing?