Female activewear with 0 synthetic fibers

Hey all! I really struggle to figure out what to wear for my stregth and cardio workouts. While tops are easy to find, the biggest trouble I have with bottoms. I don't wear leggins/bike shorts (they all have at least elastane in them anyway) but all shorts I can find are made of synthetic fabrics. Surely I can't be the only person on earth having this issue? What are you wearing to the gym that's durable and made from natural fibers?