why some android elf file has interpreter path?

I am learning the elf file format for Android, but I have found that some elf files can specify the loader through the interpreter path in the program header. However, the elf test file I wrote myself through Android Studio does not have this attribute. What is the reason for this? In elf files with an interpreter path, I can specify my own loader linker to get an earlier elf debugging time, but now many files do not have an interpreter path. Is there any other alternative?