If it were me with my current knowledge and supplies I could maybe make a slingshot, atalatl, or a sling but even then I would not have the necessary skill to use it effectively .
2now wrote:We have a great historical record of the development of human arms [and armor]. Look at your situation and limitations, then determine what is the most advanced weapon you can own [build] within those parameters.
A matchlock is very easy to build and in a “no gun zone” any bang should be off putting to an agressor.
There are even historical accounts of cannons being built out of wood. They had a short life span but they did work. A wooden cannon is still scary as shit if you are picking a fight with the owner and your side only has spears and clubs.
After that crossbows or longbows, pole weapons, spears and the time honored practice of taking farm tools and making them into weapons.