Best first time parrot
The obvious choice is the budgerigar or the cockatiel. These are ideal if cost is a factor, as smaller birds require less money to acquire and set up.
That said any pet bird, who isn’t trained to step up out of the cage and go back into the cage won’t be an agreeable pet. If you don’t have time to interact with the parrot and allow out of cage time, then a parrot is not the best pet for you.
The best bird for you also depends on how much time you have to devote to the bird and how much you’re willing to learn about parrots in general, and your preferred species.