Those of you who have tried laser hair removal!

Hello, I am quite worried about my body hair. Even when I try self-hair removal, the effect is only temporary; if I leave it untreated, it returns to its previous state very quickly, and I worry that it might actually get worse. My skin is on the sensitive side, so I am concerned that it seems to irritate me a lot. I am wondering if laser hair removal might be less irritating than self-hair removal. I am also curious about the treatment frequency. Since the hair grew back so quickly after self-hair removal, I am wondering if the treatment cycle is a bit longer. If I continue laser hair removal, will there be a semi-permanent effect, such as a slight reduction in hair volume, even if the cycle lengthens? I would like to know the treatment frequency for those who have received laser hair removal!