In the US, sticks of butter have tablespoon measurements printed on the label, like this: https://www.errenskitchen.com/wp-content/uploads/2018/02/butter-sticks.jpg
Most people leave the sticks of butter in the fridge with the wrappers on. If you want X tablespoons of butter, you cut through the wrapper and butter at the right mark.
I’m not saying it’s an ideal system (I also prefer recipes that use weights) but it works.
If your cup measurements are not the same you need new measuring cups.