Start with a shotgun before a rifle. Remington 870 or Mossberg 500 are both great shotguns. They’re cheap....you can buy one of each.
I'd recommend against buying one of each for this reason. If one becomes damaged you can use it for spare parts for the other.
That's why when I run across cheap Com Bloc milsurp stuff I always save up enough money to buy two.
Just a thought.