Recover my bitcoins (Unknown transaction)

[YazNaz94]

Hello,
I have a problem with my wallet.
I received a transaction in 2017 Same day and once confirmed there was a transaction with the same amount of btc received to another empty address. May I know if it's a bug? Do you have any ideas ?

Here is the address of my wallet: https://www.blockchain.com/btc/address/1FbDvS7nL9njJXSP796u9nW8mfcUZg8pHt
Here is the address of the wallet to which the transaction was made: https://www.blockchain.com/btc/address/1NcLMBfoet2QLRuuboFd6g7tm9jRsvKFF

[YazNaz94]

there is chance you just sent out to that address.

How to retrieve it do you have an idea ? It can be a masked adress on my Wallet ?