Install BOTH Acrobat Reader and Acrobat Pro Correctly

I have an RDS environment where some users need the more advanced capabilities of Acrobat Pro while others just need to view PDFs.

We had both Reader and Pro DC installed, but recently, something got corrupted and Acrobat.dll kept causing crashes (according to event viewer).  I uninstalled Acrobat Pro DC and it appears to have removed Reader as well (though I didn't realize that at the time).  I then re-installed Acrobat Pro DC and not it works properly.  Except for the folks that don't need the more advanced features.  Reader is no longer there.

I tried to download and install the Enterprise offline installer for Reader and ran it, but it stops shortly after the install process saying there's a more capable version installed, so it won't install. (THANKS ADOBE!)

The install and uninstall process is extremely lengthy (seems to take about 20-30 minutes of simply waiting), meanwhile, it forces me to take the RDS server offline so I can try installs and uninstalls, disrupting the business.  (THANKS ADOBE!)

Can someone enlighten me to the requirements and restrictions and methods of installation to get both products installed and working again?  I've worked around it for the time being by installing a much older version (Acrobat Reader 2017 with updates through some point in 2021, thanks to NINITE), but I would rather be using a (working) current product that (presumably) more secure.

Thanks!