Worried about cracked and peeling nails

My nails break or peel off in layers even with just a slight bump.

Even though I haven't applied nail polish, the tips of my nails peel off thinly as if splitting, and even if I let them grow just a little, they form layers and fall off as if tearing.

It feels like it gets particularly worse after washing dishes or my hair, and once it starts peeling, the same spots keep flaking up repeatedly, making it look really messy.

I've been consistently applying nail strengthener and even tried filing my nails instead of clippers, but there isn't much difference.

My nails aren't thin, and they're thick.

Even though they tend to grow, they break easily from even a small impact, so it subtly bothers me during daily life. I am especially worried about my fingernails first when typing on the keyboard or opening packages.

I'm confused whether it's due to a lack of moisture or nutrients as I get older, or if it's because I go to the swimming pool. I'm really curious to know how anyone else managed to take care of their nails when they peeled in layers like mine. If there is a method that worked well with consistent use, please let me know.