question about gacha probability

https://preview.redd.it/vlr457ynzpee1.png?width=996&format=png&auto=webp&s=e95482f16fb1c82f489d8e1349d9d7517ab259e8

I'm new to the game and found this post ( Gacha math: You have a ~35.6% chance of getting a 5* before soft pity kicks in (and other fun facts) : r/HonkaiStarRail )

my question is. Are these numbers correct? How can it be that people often lose 50/50 when you read other posts. The probability is extremely, extremely low