Is cutting long hair short effective in preventing hair loss?

Lately, my hair has become much thinner than before, and I am very worried because the amount of hair falling out every time I shampoo has increased noticeably. I am particularly stressed because the crown of my head hurts and feels like it is thinning out. I suspect that hair loss is progressing, so I have been looking into various methods. I have heard from others that cutting long hair short makes it easier to manage and helps prevent hair loss. However, I am curious whether hair length actually has a direct impact on the progression of hair loss, or if it simply results in less tangling and a reduction in the amount of shedding. I would like to hear actual experiences from those who have cut their long hair short—whether they experienced an alleviation in symptoms or easier management, or if there was no significant difference. Please advise on whether adjusting my hair length is a meaningful choice for preventing hair loss.