Early symptoms of hair loss

In the past, I had so much hair that having a lot of hair was actually stressful, but these days, since my hair is gradually falling out, it's stressful. I miss the days when I had thick hair; I really do. After washing my hair, I notice a lot of hair falling out, and lately, my crown area seems to be quite sparse. So, I switched to a shampoo with hair loss prevention properties and started taking hair-friendly supplements. It's only the beginning, so I haven't seen any effects yet, but if I keep taking them consistently, I believe I will see results. I want to scold myself for thinking that having so much hair as a child was a stress, when in fact, it was a blessing.