Unfortunately, no, there is no direct or official way to "export" your trained brain (watch history, search patterns) and "import" it into another YouTube account. Your recommendation algorithm is hardcoded to your specific Google Account and cannot be transferred .
However, you can successfully transfer the "skeleton" of your account (subscriptions/playlists) to give your friend a huge head start. Here is the breakdown of what is actually possible and how to do it.
Here is a clear distinction of what moves and wha