Will forehead filler look natural?

I didn't pay much attention to it before, but looking at recent photos, my forehead line looks a bit flat, so I am considering forehead fillers. I think the most important thing is a natural change, making it look like my forehead was beautiful to begin with, rather than an artificial look. I am curious if those who have received forehead fillers were highly satisfied. I would also like to know how long the effects lasted and whether the shape seemed to change over time. Since this is my first time, I have many concerns, so I would like to make a decision after hearing about actual experiences. I am also curious about what I should focus on checking during a consultation and what criteria are important when choosing a clinic. It would be helpful for my decision if you could let me know if anyone around you commented that it was noticeable after the procedure, or if it became more natural over time.