Install ownCloud on Raspberry pi 4

To Install owncloud on Raspberry pi 4. we assume that the operating system Raspbian is already installed and running on the Raspberry Pi 4.
NOTE: The commands to install owncloud have changed. Visit the written post for the proper commands.

Written post:
https://www.avoiderrors.com/?p=46930

Install Raspbian OS On The Raspberry Pi
   • 2021 How To Install Raspbian OS On The Ras...  

Raspberry pi I used:
https://www.avoiderrors.com/Raspberrypi4