The key lies in whether Wang Juan you mentioned really knew the people in the so-called organs, and Wang Juan took the money. How do you prove that the man who claimed to be in the office took your money?
What you described is a civil dispute, which does not constitute fraud and bribery.
Friend, instead of looking for so-called people to spend money to protect your brother, it is better to find a lawyer to defend your brother's criminal case so as to get a reduced sentence within the scope of the law. If he does come out, he will commit a heavier punishment in the future. How much money do you have to protect it? If you break the law, you will be punished by the law. That's for sure.