Klopp was unlucky to be competing during Pep's and Manchester City's prime. That Liverpool team could have dominated the league more in the regular seasons. Arsenal have young and talented players. Arteta can contribute to their mental development. However, the transfer of a finishing striker could help them to get results faster and I think that would be a better strategy for them. Klopp took Liverpool to the top after a few years of adventure. If Arsenal want that to happen more quickly, they need to give Arteta some meaningful gifts like Osimhen or Mbappe.
Let's not call it unlucky because I think everything happens for a reason and when Klopp missed to win the Premier League title with those 97 points, he understood that in order to beat Manchester City he has to go absolutely above and beyond the limits. That's what he again did with his Liverpool team when they scored 99 points, which was the second best result ever in the Premier League as Manchester City made it 100 points one time.
But the fact of the matter is that Klopp took on the challenge and that they didn't lose track of their goals as a unit. They wanted the title and they were devastated when they couldn't win it with 97 points. No problem, we raise the bar and make it 99 points! I love the mentality Klopp has.