You should know this, that bitcoin transactions are one way forward actions that cannot be reversed, it's either the transaction gets confirmed and you lost your bitcoin through sending it to wrong address, if you sent to a wrong address, the coins are gone forever, if your transactions is unconfirmed, give it time to get confirmed because mempool might be busy atimes, now this is where people get it wrong, if you loose access to your private keys that allows you to have control over your bitcoin for yours doesn't mean your coins are lost, they will always be on that wallet till you have access to those keys or they remain there, that is not treated as lost coins.