What wallet was that? You probably used a phishing link or downloaded some suspicious software. Hacking a wallet isn't easy and a hacker needs some help from you to be able to pinpoint your machine. It's like looking for a specific grain of sand on a beach. Be careful your PC may still be exposed (it most likely is) and if you transfer more money to your wallets it can be stolen again.
That's right, it would be better if you will create a new wallet since it was hacked by someone or a program. Yes, OP might entered his/her info in a website thats needs wallet address(mostly for phishing attempts or airdrops). We have to be extra careful when it comes to our crypto as people nowadays will do everything just to steal or earn money from someone.