My lower face looks wide, but I'm not sure if it's because of the muscles or my natural face shape lol.

I want to get square jaw Botox these days, but I don't even know the most basics lol.
When I take photos, my lower face tends to look a bit wide and square, but I can't tell on my own whether it's due to my jaw muscles, my natural bone structure, or just fat.
When I clench my teeth, the sides do get hard, but I'm not sure if it's developed enough to warrant Botox.
So, rather than just booking a square jaw Botox appointment, I’d like to get a consultation first.
Can I really tell immediately if I am the type that suits Botox after a consultation?
I don't really have a desire to make my face smaller; I just want my lower face to look a little softer, haha.
If your natural facial shape has a greater influence than your muscles, then getting Botox might not result in a significant change, right?
In that case, I don't want to start with unnecessarily high expectations, so I want to hear from the beginning how much change is realistically possible.
I am also curious if people who habitually clench their teeth or frequently eat tough foods are more likely to have developed jaw muscles.
I tend to clench my teeth tightly when I concentrate, so I've even wondered if that's why my jaw has become tighter.
For those who received square jaw Botox, did you go thinking you had a muscular jawline? Was the consultation result similar?
Or are there cases where you received a different explanation than you expected because, upon actually checking, the proportion of muscle was not significant?
I would like to have a consultation first, and if I feel it is really necessary, then I would like to have the procedure.
I was worried about why my lower face looked wide, so I'm curious to know how those of you who consulted about square jaw Botox actually verified the results.