Hi. I'm David, and I'm happy to help you.
Resetting your PC will remove all your data from the laptop. I don't think this step is optional, as the AI mentioned, because some of your data may remain deep within the system if you only remove files, accounts, and apps. Therefore, it's the safest thing to do.
Reset the PC as instructed in the article below:
After the reset procedure finishes and you are prompted for the new username, shut down the PC.
Feel free to ask back any questions.