Hi!
As the title says, what happens if i get an address wrong? Do the coins get lost?
If that's what happens, why not change the code in Bitcoin, so that if the bitcoin network cant detect that address, returns the bitcoins to you?
If you send your btc to the wrong address it's your fault and your btc is gone and the receiver will be a lucky person because you cannot claim it back so if you don't want to lose your btc as soon as possible before you send your btc to another person or wallet always double check it maybe if you don't do that it might be gonna happen to you so always double check.