"alias_name" is the correct alias used for the DS user.keystore file. However it looks like you are creating a new key in that picture, but you want to set an existing key for uploading to GPlay rather than creating a new one. Try asking ChatGPT how to import an existing key.
Alternatively, you can tell the Google Play console that you want to change the upload key to a new one and then create a fresh one using Android studio. This second approach is a bit more complicated tho.