Have you found anything that works well for hair loss?

Lately, I've been worried because my crown area is thinning.

So far, from what I've looked into, beer yeast and biotin supplements are said to be good. Has anyone tried them?

Please recommend all treatments that have been effective for hair loss.

I've also tried hair loss shampoo, but it wasn't very effective.

Cutting my hair short seems to reduce hair loss a bit, but new hair isn't growing back.