Chin filler procedure price and duration

I've been self-conscious about my slightly short chin since childhood, so I'm planning to get filler injections. I've heard that just one filler treatment can make your face look much slimmer and give you a more sophisticated impression. When choosing between domestic and imported filler products, what should I prioritize?
I am worried about potential side effects, such as a foreign body sensation or the shape becoming distorted, after receiving the filler treatment. In particular, is it true that the effects of chin fillers last longer when combined with pebble Botox? I am considering whether it would be better to choose a product with a longer duration of effect, even if it costs a little more. Since this is my first time getting fillers, I plan to emphasize this during the consultation in case too much is injected.
I heard that I should avoid alcohol and saunas for about a week after filler treatment; are there any other precautions? If anyone knows of a skilled doctor who can naturally correct my facial shape, please leave a comment. If a single filler treatment can drastically change my appearance, I think it is definitely worth the investment. Looking at the before and after photos, everyone looks so beautiful after getting fillers, so I really want to get one soon too.
I would be grateful to receive information on places that design filler procedures kindly and meticulously.