What is the origin of insect wings?

There are many opinions on the origin of insect wings, and so far scientists cannot agree on one clear answer to this question. But at this time, the most reasonable hypothesis is a paranotal origin. Accordingly, the wings became the next stage in the differentiation of skin outgrowths. They are completely motionless and are on the sides. What provoked their improvement? it is possible that insects lived high in trees and other plants, they needed to jump a lot in order to move, and the appearance of wings greatly facilitated this process.