During the ban on beef on the bone, one had to think about alternatives, not only to beef on the bone, but to stock made from beef bones.
First of all, it is worth considering whether you really need stock. The secret of a good meat sauce for spaghetti is not stock, but slow cooking.
Instead of trying to cook in 10 to 20 minutes, slow down. Plan your time in the kitchen so that when you have time available, you use it to make several dishes that benefit from extra preparation and cooking time, for use later in the week. Make a batch of ragout, or meat sauce, and freeze some.