Problem animating bones’ paper plane

After practicing sculpture, I decided to get into animation and run into a problem. I started practicing animation, but I have a problem. I chose the bones for this exercise. The exercise was to make a turn of paper and I wanted it to fly, to do it in other ways, but I had never done it before with bones. At the time of trying to fly, the plane is deformed very ugly. Any idea how to fix it?