Blockchain transactions are immutable. Transactions submitted to a blockchain network and already confirmed by the miners of that blockchain, cannot be cancelled or reversed.
Given that blockchains are decentralized, we cannot control your balances or the amounts you've sent out of your wallet.
Ownership over blockchain assets is designed to be unique to the holder of the balances and if you've sent any Bitcoin, Ethereum or other cryptocurrencies to a wrong address (we've all done it at some point in our crypto endeavours), there isn't much that can be done.
Unless you manage to identify the owner of that address (that holds the Private Keys for that address) and if they are willing to send that amount back to you, there isn't a way to vet your crypto back.
The same applies in the undesirable event where your wallet is accessed by unauthorized parties and transactions have been broadcasted for your wallet balances. If they manage to transfer your assets out of your wallet, there isn't a way for us to return them to you.
It's always very important that you triple-check the address you're sending your crypto to and that you keep your wallet security information and your device safe.