Modern CS2 is beautiful, but 2013 CS:GO was janky in the best way. The movement acceleration was higher (air strafing was easier), the weapon sounds were "crunchier," and the ragdoll physics were hilariously buggy.
If the game crashes on launch, browse the local files and run the csgo.exe directly from the folder. Method 2: Using Steam Console (The Advanced Way) Csgo 2013 Version Download