What intensity should I get to achieve a natural-looking Botox effect?

I heard that getting too much Botox looks unnatural, so I'm a bit worried!! Haha

I'm wondering what intensity I should get to see natural-looking Botox effects.

Since it's my first time getting Botox, I'm hesitant about the changes being too obvious, so I'd prefer something that just slightly refines my look.

I'm also worried about whether my facial expressions might feel stiff after getting Botox.

I also want to know if the results vary significantly depending on the amount or intensity of the Botox injected.

For those who had a natural and successful outcome, I would appreciate it if you could share your experience on how you proceeded so I can use it as a reference.

Thank you in advance!