Special shape

Hello everyone
Let me introduce myself, I am Angel and this is the first time I am posting on the Community Forum.
I have tried different methods, but I cannot draw this shape as attached picture.
Would there be any of you who have experience on this 3D drawing and can give me some tips on how to proceed?
I have also consulted several demonstration videos, but have never found the right one.
Thank you in advance for your help.
Angel

This might help.

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