Prevention of hair loss

Originally, I didn't have much hair density and my hair was thin.

I didn't feel like I was lacking when I was young.

It's not even curly hair, but a very shiny, straight hairstyle that I often received envy for.

After having two children, my hair gradually started to thin from both sides of my forehead, making my forehead appear wider.

It seems like the back is also thinning a lot now, gradually disappearing.

Actually, I lose a lot of hair after washing my hair.

I tried using hair loss shampoo, but since there was no immediate effect,

I don't use it anymore because I keep stopping and starting.

How does everyone manage their hair loss prevention?