>>14143626That's just how it goes. You don't know what to expect.
I lost to my rival in FireRed from a critical in the first fight. I also got swept in Victory Road in the BlazeBlack romhack because of a Chlorophyll Jumpluff.
Besides, once you lose, you can turn it into a normal run and catch what you missed, or just restart and play a new way or try again. It's just a little challenge to change things up. And sometimes you get some real bullshit thrown at you.