Paco Cabrera You can search the forum, this same question pops up here form time to time, so I will not be repeating most of what has already been discussed, just give a short summary. Please use search if you want to learn about the details of “why”.
Long story short - confirmation is necessary for stable recognition process, unfortunately. However, you don’t have to click into every face separately, you can do mass confirmations. More about here: https://tonfotos.com/docs/people/face-recognition/#working-with-faces-in-the-people-tab
Also, I would strongly recommend watching videos on our channel, in short time you will learn most of the tricks to make your work with faces most efficient: https://www.youtube.com/@tonfotos