Everybody from Las Vegas to video-game designers expect Brooklyn to be arguably the worst team in the NBA. After going 21-61 last season and not adding any All-Star talent in the offseason, even the Nets know they have earned all the dire predictions.

Now they are planning on earning — and working — their way back to respectability.

“It’s to be expected. But I’m not much of a bulletin [-board person],” Jeremy Lin told The Post at Nickelodeon’s Worldwide Day of Play in Prospect Park. “There’s not anything you could say or do to make me more motivated, and I feel like that’s probably true for our team.

“We have to play harder, and just want to win more. If every night — or the majority of nights — we can say we were the team that played the hardest, that’s what’ll give us the best chance to succeed. … At the end of the day, it’s how hard we play.”

And how hard they work is a big emphasis for general manager Sean Marks and hands-on coach Kenny Atkinson, known for player development.

The Nets aren’t going to out-talent many teams, so they will have to outwork them, be more artisans than artists. Sports Illustrated included just one Net (Brook Lopez) in its top 100 players, and the Westgate Las Vegas SuperBook had them tied for the worst odds to win the title: 1,000-1.

“We can’t do anything about that,” Luis Scola said. “We come to work to do better and win games. We can’t do anything outside of working every day, and that will eventually change how people will see us.

“What the Brooklyn Nets show them, how we do on the court, that’s what they’ll talk about.

“It’s up to us to win games, then people will start respecting us more,” Scola said. “We can’t start talking about what we think is going to happen. We have to make it happen. If we do well, then people will start saying good things about us. We can’t expect them to say we’re going to do things we haven’t done yet. … When we do the right thing, people will say good things about us.”

They did enough bad things last season — including habitual tardiness and bad practice habits — to get their general manager and coach fired. But the new regime has harped on professionalism, work ethic and player development.

Scola, who got to know Atkinson when he was on the staff in Houston, said that work ethic helped convince him to sign in Brooklyn.

“He was always there for working on basketball, ready to do it. That’s very important,’’ Scola said. “He did it back then, and he’s doing it even more now.’’

That is evidenced by how early the Nets have started, with almost the entire team already having come to work out despite camp not starting until Sept. 27.

“Most NBA organizations, you [don’t] have the majority of your guys in training at the beginning of August,” guard Joe Harris said. “We had 11 guys in working out at the start of August. You don’t see that.

“Most guys straggle in toward the end of September, so the fact we had a lot of guys in early shows that guys have bought in to that development aspect and what the coaches are trying to get done.”

From assistant Chris Fleming flying to Zagreb and spending weeks working out with off-guard Bojan Bogdanovic this summer to the performance team led by Zach Weatherford — the former Navy SEALS Human Performance Manager — the staff is more hands-on than the last. Atkinson epitomizes that.

“That just shows how much he cares,” Isaiah Whitehead said. “He really genuinely cares about you, and wants to see you do well, all of the players.

“He’s a real down-to-earth coach. He’s one of the best in the NBA.”

It is easy for Whitehead to be optimistic: He is a rookie who hasn’t played a single minute, and Atkinson hasn’t suffered a single loss. But so far, he has them responding — and working.

“Kenny is more on-court than Lionel [Hollins],” forward Chris McCullough said of the former coach. “When we’re working out, he’s working out with us. I like that about him.

“The same with all the coaches. Everybody is hands-on. Everybody’s coming in and just working hard, different mindset than we had last year.”