I am worried that sagging or shifting might occur repeatedly.

Immediately after the procedure, it looked good because the volume was added, but as time passed, I felt like the filler was gradually sagging downwards or shifting slightly to the sides of my mouth due to gravity. As a result, my lower face looked heavy and my facial lines seemed to be collapsing, so I eventually had to go through the dissolution process. It turns out fillers are not something to be taken lightly.

I want to fill in the hollows in my cheeks again, but I am hesitant because I am worried that the sagging or displacement I experienced before might recur. If I undergo the procedure this time, I would like to know if it is possible to inject the filler by firmly fixing it deep within the skin layers to prevent it from easily shifting or sagging. I would also like to know if you can precisely position the filler.

Is there also a gentle injection technique?