It seems like my hair is getting thinner gradually.

I feel like my hair gets thinner as I get older~ I'm not sure if it's because of dyeing or because I spend a lot of time in the sun, but I feel like it's gradually becoming thinner, and my hair volume also seems to have significantly decreased.

Is it true that eating a lot of home remedies like black beans is good, and will it also be effective for thinning hair?