Trouble finding my Ethereum I transferred long ago

Hi all, as the title says, I transferred Ethereum to an external wallet about 9 years ago that I want to return to Coinbase. Worth over $200 today. Coinbase sent me to etherscan, where I can view the record and details of the transfer… however I still have no idea how to recover it. Clicking on the receiving address just shows me more details.

I don’t actually recall the site at all. I do have a secret seed that i wrote down all those years ago… any advice? I would hate to just let it go, but this has been bothering me for years. Thanks for any help!