NDK Not found unity 2021.6.f1

Question

I'm trying to build an android apk file from unity. I already installed all android tools as the Unity Hub shows :

https://i.stack.imgur.com/gaO0F.png

but when I try to get a build this happens :

https://i.stack.imgur.com/jnGd8.png

What I have tried is downloading NDK from this site :

https://dl.google.com/android/repository/android-ndk-r24-windows.zip

and facing this boy :

https://i.stack.imgur.com/Hkxas.png