The best way to keep bread fresh longer is to wrap the bread in some aluminum foil or plastic.
If the bread is homemade bread wrap the bread in some aluminum foil and then add some plastic to the aluminum foil as well.
That will help keep moisture in the bread and make the bread last longer.
If the bread is store bought bread be sure to tie the plastic bag closed when not using the bread.
Storing the bread in a dark place such as the pantry or in the cupboard in the plastic bag is also a good way to keep the bread fresh longer.
The bread should last for a few weeks or longer when stored in a cool dark place and kept in the plastic bag or wrapped in foil or plastic.
You can also put the bread into a plastic container while still keeping the bread wrapped in plastic or kept in the plastic bag.
Don't put the bread in the refrigerator though because when you refrigerate bread it makes it go stale and bad quicker.