If you go to https://groups.google.com/g/android-ndk-announce/c/jKT62DFLGUI?pli=1 it says "NDK r23b is now available in the stable channel of the SDK manager (use ndkVersion "23.1.7779620" in your build.gradle file) and for download from our website." but when you visit their website you won't be able to find it because it is now considered as unsupported but if you scroll down you would find a link to unsupported ndks https://github.com/android/ndk/wiki/Unsupported-Downloads but i wasn't able to find the specific version you need but there is version r23c available, can you check if that works for you?