Is hair loss shampoo effective?

Since I often tie my hair and I'm gradually getting older

It seems like the top of my head is thinning more than before.

I've tried various hair loss shampoos, but I think their cleansing power is weak.

It still feels like the grease hasn't been fully removed even after rinsing.

It seems like my pores are clogged, and I didn't see much effect.

Do I need to use it consistently to see results?