Conda install to offline computer with different OS

Hi all,
I know this question has been asked before, but the answers were not clear and I would appreciate if someone could describe the steps involved. I need to download conda, python, and pip to an offline computer that has a different operating system from my online computer.

What I need to do is:

  • Install conda, python, and pip to offline computer. I have downloaded the source files on my online computer. I am unsure how to install these files to my offline computer (with the downloaded Python version as the default python for a conda environment).
  • Install python packages (geopandas, sklearn, etc.) and all their dependencies into offline computer with newly created environment.

Thanks in advance!