Why does this always happen to me?

I don’t understand anything anymore, everyone on the internet shows that if I set the canvas scaler in this way, it scales well but for me everything grows up Why? (you can see in attached video how i set the canvas scaler)

7966446–1021476–video.zip (2.73 MB)

Here are some notes on UI Anchoring, Scaling, CanvasScaler, etc:

Start with an ultra simple scene until you get the hang of it.