I am a 19 year old female with a deep widows peek. What can I do to straighten my hairline apart from laser removal? (Photo)

My hair is Generally a little thin so I want to avoid laser which will lead to reduced volume. What are other practical ways are there to straighten my deep widows peek. I used to tie my hair in a tight pony tail all the time and used a tight stretch find across forehead which may have led to titration and encouraged this hairline. Will keeping my hair loose now help even the slightest for it to become normal again?