If I develop resistance to Botox, does it really lose its effectiveness?

I'm considering getting Botox regularly, but my biggest concern is developing resistance.

I've heard from people around me that if you get Botox frequently, the effect gradually weakens over time or sometimes stops working altogether.

On the other hand, there are people who say they have been getting it consistently for several years and are still seeing good results, so I am confused about what is right.

Those who get regular injections, especially for jaw or trapezius muscles, seem to worry a lot about developing resistance, so I'm curious to know what it's actually like.

Is there anyone who has been getting Botox for a long time?