Does wearing hair tight stretch the soft skin tissue of face? is it irreversible?

The problems people experience from wearing their hair in extremely tight pony tails for an extended period of time are typically associated with hair rather than skin. Because you are young any very minimal effects that have been created in you skin will dissipate. I would suggest to wear your hair in a pony tail less frequently or at least in a loose pony tail.

Is not a good idea to wear your hair stretched tightly as this often causes permanent hair loss. Any effect on the face will be temporary and does not cause sagging over time.

Though it would be minimal, it is possible to stretch your skin back very tightly from a ponytail. At your young age this should not have an overwhelming effect though as you have young skin with a good amount of collagen. It's advisable not to wear your hair that tight though and some people find that when they do this, they actually damage the hair follicles along the front which can create a premature balding in that spot over time. A loose ponytail is fine. "This answer has been solicited without seeing this patient and cannot
be held as true medical advice, but only opinion. Seek in-person
treatment with a trained medical professional for appropriate care."