This is my first time getting Botox. Is it effective?

Lately, whenever I look in the mirror, I feel like my impression looks too strong, and I'm worried because fine wrinkles are starting to appear one by one. I even tried using a roller, lol, but it didn't work. I'm thinking of getting a Botox treatment, which is said to be the best and most basic option.

From what I've heard from others, Botox is the most cost-effective and safe option, but I'm actually a bit worried that my facial expressions might look unnatural after the procedure or that I might feel uncomfortable because I lose the strength to chew. I'm also curious if I need to keep getting it done regularly to maintain the results once I start, and if the tangible effects on contouring or wrinkle reduction are actually noticeable.

I'm sure there are some of you who get Botox regularly, right? Please share your honest experiences or opinions regarding satisfaction, frequency, and effectiveness.