What to do if I want my coworkers to be fired and replaced?
That sounds extreme. Did your coworkers do something they need to be fired for?
They're really lazy and bad at their profession.
Feeling like you do all the work and your coworkers aren't being useful is pretty normal from time to time. Before wishing they all get fired though you should either talk to them or your supervisor to either make them step it up or the supervisor can keep a closer eye on them to see what's happening.
Who cares about fixing them. I want them fired right now.
Well leaving them without jobs might be too much. But I understand that you are annoyed with them and their uselessness. Maybe take some leave so you can get a break from them.