To avoid the launcher, you would need to do a fresh install of Anki, using the installer from that version (see the link), not using the launcher itself. I’d recommend uninstalling what you have via Windows settings, and then deleting the program folders – Managing Files - Anki Manual [please note that I did not suggest deleting your collection, which is stored in a separate location]. Then a clean install of an older version should work just like it always has.