https://youtu.be/j_6iRCcfYu8?si=CYrwBsPAyXOkGMqb
Focus from 00:50
How about this between Liverpool and Real Madrid (2018 final)
https://youtu.be/rtFGpfrdlMI?si=Qoh0lYjh63tpvSsD
This should tell you that personal opinion means nothing when it comes to determining incidence of crime like match fixing. A match can be suspicious to different people, but needs an authority to determine that.
Bookmakers would be withholding money for years if they had to wait to see how an authority would rule. Tiny markets don't get investigated. The bookmaker makes the decision in tiny markets on their opinion and it's never going to change. It's been done that way forever. You are trying to make up your own rules.