What are the actual benefits of Botox?

Lately, when I look in the mirror, my jawline and overall facial impression seem a bit heavier than before, so I am looking into Botox. Many people around me say it is a relatively simple procedure, but I am curious about the benefits experienced by those who have actually tried it. Aside from the visible changes, I would also like to know if the short procedure time and minimal disruption to daily life are actually noticeable. I’ve heard that choosing the right area and dosage are important when getting Botox for the first time; what did you check most thoroughly during your consultation? For those who have received Botox, please honestly share any advantages you found better than expected or any downsides you experienced. Since this is my first time, I want to refer to various reviews before making a decision!