Hair loss

Lately, I've been worried because I'm losing a lot of hair.

I've never had much hair to begin with, and it's thin, so it looks even less. Now that I'm losing a lot of hair, I feel so sadㅠㅠ

I tried using shampoos that are said to be good for hair loss, but I don't think they work. I've heard that beer yeast tablets are effective; are they really effective?