If I am experiencing hair loss, should I use less shampoo?

I am extremely stressed because my bangs have become very thin.

I look in the mirror every day and sigh deeply.

To delay hair loss even slightly,

Should I use the minimum amount of shampoo?

No matter how good the shampoo is... I'm worried it might irritate my scalp because of the chemical ingredients.

But if it doesn't lather well, it feels uncomfortable, like my hair wasn't washed properly.