what we do in the house to prep and nurture the ground is collect all organic leftovers from the food and let it go bad for a few days and then pour it in the earth so that it fertilizes it, if you want you can just use the egg shells and the coffee that is already used to help the ground where you are growing things is as easy as that.
my bf used to take a huge container for all the leftovers and even grow worms in it that help better fertilize the ground but that takes a lot of work and space so you can do it in a small way every day all the organic leftovers you then put it in the ground.
We actually did a bit of compost at first but now I am all out of dirt and I worry if I leave it out it will bring squirrels and racoons, maybe I just need to keep it covered 🤔
my bf kept it cover it helps the worms since they like the dark just make sure is moist and it has some air.