The customer service of the Trust wallet, or the excahges that I used, the exchange in question I used for the transaction is remitano and the last I contacted them, they said they don't have anything to do, that the deposit that can be confirm on their network in bitcoin is 0.0005, but in my Trust wallet history, it still writing pending showing that it has not be confirmed, so I don't know the possibility of it to be revert as I said from the beginning.
Trust wallet doesn’t enables RBF if not it will be much easier and faster, so what you will do is to import the phrase or private key into another wallet like BlueWallet or better electrum wallet and then you will double spend to another address of your wallet with a much higher fee, I hope it works because that’s the only way since you cannot turn a non-RBF transaction to an RBF enabled one. If the double spending doesn’t works switch nodes on electrum. You need to it fast because once this transaction gets confirmed there is nothing to do again
Also if this transaction gets to Remitano your funds will be lost because they will confiscate them even if you want to top it up it won’t work.
Even though you import the wallet, it will not stop what's happening or going on to the wallet, I know quite well that it will be difficult for the coins to be reverse according to the analysis Charles-Tim said, but from what you explained I believe that you have not experienced this kind of challenge before, because once you experienced this kind, you will believe that importing the wallet with help of your seed phrase can render help. This matter should be a matter of blockchain, since the value bitcoin did not meet up the preferred demand of the excahges it suppose to bounce back to the wallet, so what we suppose to do is to agitate to the exchanges that refuses to return the funds why it has not meet to the number or figure of bitcoin before it can be confirmed.