I need help picking a bird species...?

Robin is the best imo

Ok, there's a couple issues here.

One, birds are individuals. They are stubborn sometimes and no one species is "easy to train.'

Two, birds are expensive. Cockatiels and budgies are the cheapest, but you will find few other species for under $100. They'll most likely be $300+. If money is a huge issue, you won't be able to provide the necessities such as a large cage.

Three, all birds bite. You should never have a bird and expect it never to bite you, even if it's the world's sweetest bird. Bird owners have to prepare themselves for the eventuality, not possibility, of being bitten. The bird might get startled one day, you might accidentally anger them, you never know.

Four, there are few pink parrots and black parrots. The few that are colored like that are large and often outrageously expensive. You might find a blue bird, such as certain lovebirds, budgies, or parrotlets.

Five, being gone 7 hours a day will be an issue for the bird. They need stimulation and interaction, will your family provide it?

Six, birds are loud. Most species scream and all tend to chatter incessantly. Is your family alright with that noise level?

Then there's the issue of lifespan. Even the smallest of parrots can live to be 20. Whatever type of bird you get, it will be with you for around a quarter of your life. If that's too much of a commitment, then don't get a bird. I've seen too many animals abandoned because their owners weren't prepared for living with a bird that long and couldn't provide for them.

I would say your best bet is a cockatiel. They tend to be mild-mannered and they're a good size. They can be white, gray, or yellow with gray, red, or orange cheek patches.

No matter what you get, if you don't spend a great deal of time with the bird, it will not be the kind of pet you're looking for. A bird that's constantly caged will begin to fear hands and try to get away from you. If the cage is too small or they have nothing to occupy their time, they may resort to feather-plucking amd screaming for attention. A lonely bird quickly becomes a neurotic bird.

Consider adopting a parrot as requiring the same level of consideration as adopting any other unusual exotic. You will have to deal with different issues than the average pet owner; they are not dogs or cats.

Please give this a lot of thought.

Per your request, I might suggest a cockatiel. May have to shop to meet your price, mine was a 'free to good home' bird. It is the cages that can be pricy.
White with grey wings and rosy cheeks, a rather nice looking bird. Noisy, but well mannered.