I guess I'll need to move my bitcoin again, didn't know that Trust Wallet is that easy to bypass that they can just easily take away the funds in someone's wallet that easy? Kind of ironic that, you name your product as Trust Wallet but then you as a hodler can't trust to put your funds in there, I guess the plan to move it all to a safer Electrum wallet is going to be a priority to me now, prevention is better than cure.
Trust wallet for long has been considered unsafe and any users still using such wallets to store funds is only doing that at a huge risk. Just like op here, just wallet has been breached so many times and hackers easily gets access to users funds. It's more like a centralized wallets and though you are given the privilege of holding your seedphrase, but trust wallet is not to be trusted. You should also do well to move your funds out of there . Just like you had said, consider using safe wallets like electrum which are also open sourced.
I really don’t mind paying for it as long as I can get my funds back, the private investigator was just someone hired from fiverr that conducted the trace of the final destination address. They have no power in contacting the exchange.
If the scammers already moved your coins out of the exchange, it might be too late to recover them. This should serve as a warning to you and many others. Only use secure wallets trust wallet is unsafe.