Hi i made a withdraw from metamask to trust wallet and i lost 6％ of my tokens!! I don’t know what to do, are they lost forever? Thanks for your help!
Welcome to the MetaMask Community @jean!! 
Check the txid on etherscan.io. You can see exactly how the transaction was carried out, the gas fee taken, etc.
If you still have questions, I recommend reaching out to Trust Wallet support sent the discrepancy is on their end.