I used Levi Commuter jeans for a long time and they hold up well. They are also stretchy and have reflective cuffs which is nice but even they eventually wear through and Levis does not stand behind their products.
These days, I buy from brands like Prana, North Face, Patagonia, or other hiking brands that make normal looking clothes. These tend to be better made, last longer, more stretchy, and better breathing. They can also be more expensive but if you wait for what you want to popup on Steep and Cheap, such as these Prana Jeans on sale for $39 right now, then it's very affordable.
https://www.steepandcheap.com/prana-...NhdDExMDAwMjY= Also, these brands stand behind their product so if/when the crotch does wear out, I return them and get a brand new pair with no questions asked. Rei is a good place to try on the brands as well if you have one near you.