Is square jaw Botox effective?

Hello. Lately, I've been really struggling to decide whether or not to get square jaw Botox. I get stressed because my jaw looks so prominent every time I look in the mirror. Even covering it with my hair has its limits, and when I take photos, only my jawline stands out. Many people around me recommend it because it's convenient and effective. However, I'm worried about the side effects. I've seen reviews mentioning jaw stiffness or difficulty chewing food. I'm also scared of side effects like sunken cheeks or an unnatural look when smiling. The hassle of having to get injections regularly at intervals of a few months is significant, and the cost is also something I can't ignore. They say it's safer than bone-shaving surgery, but I can't be sure if it's the right procedure for my face until I actually get it. I would love to hear firsthand advice or experiences from those who have already had it done.