Try to reverse engineer .so file but decompiler always says no function and never can find any function reference

[etmltg69]

I try to reverse engineer a .so file from an android apk.
I loaded libil2cpp.so into ghidra, parsed C source with il2cpp_ghidra.h and ran script ghidra_with_struct.py successfully.

I can see all functions with names/symbols but if I select a function, the decompiler always says "no function".

When I tried it before I got many errors while running the ghidra_with_struct.py script but I could see some code in the decompiler.

The other problem is that I can never find any reference of any function.

Can anybody tell me, what's the problem or what I'm doing wrong?

Would appreciate any help and answers, thank you!