Getting the .exe files for different versions of league

Trying to load up an old replay from patch 7.2 but I lack the 7.2 .exe file and wonder if there is any place to find it, I have googled for quite a long time and i don't know if there's some database somewhere for this or something similar, also I apologize if this was in the wrong category, but I feel none of the other categories would have fit this topic, considering replays are well, replays of past gameplay.