Hi Nnnnnn_049,
I'm Dyari. Thanks for reaching out. I will be happy to assist you in this regard.
It is hard to delete this folder accidentally because Windows does not allow you to do this easily and this folder is protected, however, if you really have deleted it somehow, this folder cannot be recreated manually. Search the Recycle bin and see if it is still there by any chance to recover it. Otherwise, you should perform an in-place upgrade or even a clean install.
Please let me know if you need further assistance and keep me updated.