[Android] can't load core 【MAME core】

I tried to use retroarch to run MAME to play kov3, but I failed to load the MAME core all the time. My version is retroarch 1.90 / retroarch 1.9.10. The core of MAME is downloaded online. The version I use is 32-bit

My android version is 4.4 / 6.0. I have tried and failed to load