Welcome!

Shelter in place has some big advantages. Even in a small apartment, you can store more things than you could ever carry.

A couple of thoughts on food. Think dried foods like rice, beans, oatmeal, pasta, buckwheat groats, etc. Long shelf life when stored dry and sealed. Easy prep---mostly just soak in water. Dry milk can also be considered, but has a shorter shelf life, so it would need to be rotated.

I think that your neighbors who prep as a matter of faith have access to large cans of a variety of food items, and you may be able to access this supply. I think they also publish a recommended list of items, which you may find on-line. I recall some threads and posts about this from a few years ago, but I can't pull them up, so maybe another member will be able to find them and post links. Bottom line, get to know your neighbors and don't be afraid to discuss this with them.

Finally, and this may seem odd, learn to make bread using just flour, water, yeast (or sourdough) and salt, and bake it in a dutch oven in a charcoal fire (assuming the oven is no longer operational). Tasty fresh bread in a emergency is good for you and makes a good trading item.