Well, since you are using a non-custodial wallet and the RBF feature was not applicable in your wallet and once the transaction has been broadcast to the bitcoin network, there's nothing we can do is just wait for the when supposedly proceed and to be confirmed. That is how centralized exchange works, their wallet has a fix fee which has a ridiculous transaction fee. If the Lightning Network will widely use it, this is a great opportunity.
why do we have to be careful or at least have kept the wallets that we often use for transfers or store what we send because to avoid mistakes that sometimes occur. it is just unnecessary carelessness due to our impatience and caution, most often because of being in a hurry.
what the colleague above say is something that if it has happened, and if it has entered their network then we can't do anything just wait until the conference is over. so that when it is conferred, the work is complete. if you put it in the wrong address, there is nothing that can be done again, just maybe waiting for a miracle, that the one who was sent acknowledges that it is not his and is encouraged to return it, but whether it will be done.
maybe it will be difficult to answer but remember there are also those who can be kind. Just make sure that it will never come back again, so there is no need for you to think only adding to the headache.
