For the third riddle I think you are
Rainbow,
Flying on the sky, but I have no wings.
Rainbow may be all over the sky, but they have no wings
What I've made, undefined rings.
Rainbow makes undefined rings.
Things will duplicate, swiftly,
Rainbows do duplicate.
To huge strings I am calculated, roughly.
Yes, they truly are HUGE strings.
For the third riddle I think you are
Rainbow,
Flying on the sky, but I have no wings.
Rainbow may be all over the sky, but they have no wings
What I've made, undefined rings.
Rainbow makes undefined rings.
Things will duplicate, swiftly,
Rainbows do duplicate.
To huge strings I am calculated, roughly.
Yes, they truly are HUGE strings.