OP's story doesn't make complete sense. It sounds like a scam of sorts really did happen but I don't know how he determined that bc1qq0ah... is the scammer's address as the funds were sent to 18 different addresses.
The transaction in question sounds like a withdrawal from a custodial service.
Custodial services usually process multiple withdrawals in a single transaction and that can be why there are 18 receiving addresses.
Is there anyway to understand where all those money gone ?
As I said in my previous, there is no outgoing transaction made from the address in question and the fund is still there.
It is possible to know if that account he sended the btc to its Metamask wallet or a exchange wallet ? The guy is not responing at all and he dissaperead completely! What should we do other than police report here in italy ? So money at least are still there , who knows maybe she can have them back if the wallet its not private evenntually i hope...