Are there any good shampoos for thin and weak hair?

I'm worried because my hair is so thin and falling out a lot.

It seems like my hair is falling out more now that it's autumn. Is there a shampoo that can strengthen the roots?

I'm wondering if using scalp products or a scaler would be helpful.

I've tried a lot of shampoos specifically for hair loss, but I didn't really feel any effect.

Please recommend a product that will help with weak hair, not just a simple hair loss product!