Is there no filler doctor?ㅠㅠHow long does Restylane/Perfecta/Cleviel last?!!!

It's so confusing because each hospital explains the maintenance period differently
 and the maintenance period of each person who has gotten it is different.
 I got it on my forehead, cheeks, and nasolabial fold.
 They said that the areas to put it in are different depending on the filler viscosity.
 I got Q-Ofill on my nasolabial fold, but I don't know if it's that good.
 There are also Restylane types, but ㄷplastic surgery has something called Sub-Q. Does it last long??
 Perfecta is 3cc for about 300,000 won.
 Bebefill is also advertised by ㅁㅇㅁ as being long-lasting because it mixes in autologous blood. Has anyone gotten it?? I heard that Kwon Sang Woo is promoting something called Epitique these days. It shouldn't be much different from Yvoire, right?
 Anyone who has gotten it! Does anyone know which of these lasts the longest? Please recommend a hospital, tell me the price, and how long it lasts. I'm going to go to the hospital tomorrow and have a consultation and get it done right away!