how can open YOU VIDEOS in my DOCUMENT CLOUD files?

  Dear Sir, 

                I am using ADOBE ACROBAT READER DC & storing all my PDF files in  the

                DOCUMENT CLOUDS.

                Now I want to open the DOCUMENT CLOUD files, I saw YOU TUBE videos. 

                In that, When I click to open the YOU TUBE  videos, it is not open & inform that "YOU 

               TUBE DOES NOT OPEN"

               I want to open the YOU TUBE videos in DOCUMENT CLOUD.

               Please excuse me,I AM a man aged 72 years old, who do not know the Basic principles of

              COMPUTER, but try to learn something now in this fiels.

              Please guide me to do well, 

              UMACHANDRAN VISWANTHAN.

                  .