Magisk in rar format


I am trying to root my s10 plus. I downloaded magisk to my phone and installed. When I opened magisk manager, it has a ‘x’ against Magisk is not installed. When i click install to flash an AP file, it shows a ‘?’ Next to Magisk is not installed instead of a ‘x’.

Also when i tried to copy the magisk file to my pc, it is in a zipped rar format, as a result it couldn’t run in odin…it stucks in file analyzing.

What am I am doing wrong? Please help. Thanks in advance.