I have a receding chin and severe wrinkles. Will getting Botox on my chin make it smooth?

Hello. I am in my twenties and am always self-conscious about the wrinkles that form under my chin—resembling a walnut shell—whenever I close my mouth or consciously tense my jaw, perhaps because I tend to have a slightly receding chin. Every time I look in the mirror, the uneven and rough appearance of my lower jaw makes me look sullen, and it makes my profile look shorter in photos, so it has become a subtle complex for me. I wondered if I needed fillers, but I heard that the chin can be smoothed out with just Botox treatment to stabilize excessive muscle movement, without necessarily needing to fill it in.

I heard that the principle and feature of this procedure is to relax the muscles in the jaw area to naturally shape it. I am asking those with experience if it effectively smooths out deep wrinkles like mine. I am also a bit nervous about getting the injections, fearing potential side effects such as asymmetrical corners of the mouth or drooling. My jawline is naturally on the blunt side, so I am curious if the chin Botox makes the line appear slimmer to some extent.

I also need a standard to determine whether the wrinkles under the chin will lessen immediately after just a single injection, or if I need to get them regularly at fixed intervals to maintain the results. I am planning to visit Maypure this week for a brief consultation, so I would appreciate your advice on any precautions I should take or any helpful tips I should know beforehand. Do people tend to get chin Botox treatments bundled together with square jaw reduction injections?