Burn treatment review from when I was young

When I was young, I got burned by a stove in the summer. It was summer, so I Because I was wearing short sleeves and pants, the burn scars stayed for a long time. Fortunately, I used a good ointment, so the scars weren't too bad, but I couldn't stand for a long time because I had problems with blood circulation. When I stood, the burned area on my legs would sting, so it was hard to stand. Now, it's not a problem... but the burned area remained on my arms and legs, as shown in the picture, so when I was young, I had a complex because it was a kind of embarrassment. At that time, plastic surgery wasn't common, so I couldn't even dream of getting it. However, as I've gotten older, plastic surgery on burned areas has become common these days, so the desire for plastic surgery is sprouting.

Moreover, since the child has health insurance and the child's company covers up to 90% of the hospital bill for hospitalization and surgery, the desire for plastic surgery is gradually rising.

The question here is whether plastic surgery is still possible after decades have passed, and whether it is possible to know in advance how much improvement is possible compared to the current skin condition.

The cleaner the scar, the better. But even if it's not that much, I'm wondering if it's possible to improve it to some extent compared to the current condition shown in the photo. I'd like to get a lot of advice from experienced patients and doctors.