Yeah, confirmation bias plays a huge part in this. You are far more likely to remember missing multiple times than hitting consecutively.
Also, you would probably hit as many times on a 20% chance as you miss on an 80% chance, but since most people choose not to attack if their odds are that bad and just take a different option, the data you are working with is incomplete and skewed.
If you are really missing 14 times in a row there could be something up with your game, maybe you somehow triggered a bug, or it could be one of those improbabilities that when considered on the cosmic scale are virtually inevitable to happen from time to time.
Personally I have not noticed anything wrong with the RNG. I’ve missed on a 98% once, and I have also gotten 3 consecutive critical hits. Unlikely things happen from time to time, but generally my results match the expressed success percentages.
