What is the duration of Botox, and is it okay to get it combined with fillers?

Lately, fine lines on my forehead and between my eyebrows keep catching my eye, so I'm looking into Botox. In the past, these wrinkles were only slightly visible when I smiled, but these days, they leave subtle traces even when I'm not making any facial expressions. They say aging is natural, but I don't know why wrinkles are so diligently showing up for work, haha. So, I want to manage them without overdoing it.

What I am most curious about is the duration of Botox effects. I would like to know how long the results usually last after a single injection and how often one should get subsequent treatments. I have also heard that you shouldn't get them too often, so I would like to know how to manage them in practice.

I am also looking into fillers, but since Botox and fillers seem to have different purposes, I am curious about when they are administered together. I have some sunken areas on my face and am concerned about fine lines, so I am wondering if combining the two would yield a more natural result. Of course, I find it burdensome to do everything, so I only want to get what is absolutely necessary.

I've noticed that procedures like Revicol, Density High, Shrink Universe, and InMode are quite popular these days. Are there cases where these lifting treatments are combined with Botox or fillers? If each has different advantages, I'm also curious about the recommended order of treatment.

I’ve heard that the Botox procedure itself is quick, but I’m curious how long it actually takes from the consultation to the end. I’d also like to hear reviews from people who have actually received the treatment, regarding when the effects appear, satisfaction levels, and the duration of the results. In particular, if you have managed to reduce wrinkles while maintaining a natural facial expression, I would be very grateful if you could share how you received the treatment!