Liverpool didn't need to push themselves any further after they took a 2-0 lead. Even if the score hadn't been 2-0, they didn't need to push themselves because they were champions and they didn't need to show the high performance they showed throughout the season. They knew they didn't need to push themselves too hard because the players were at a higher risk of injury towards the end of the season. Arsenal fans always have very high expectations from them, but Arsenal can't seem to achieve the success they want.
Arsenal could become a very different team with a few transfers. I don't think they're a bad team and I think they could become very good with a few more transfers.
Understandably, Arne Slot will not push his players to work hard after they have successfully secured the Premier League trophy this season. In a normal competitive situation, I think Liverpool would have managed to beat Arsenal at Anfield. However, Arsenal success in equalizing is also not to be underestimated, they have the bargaining power to beat any team. Meanwhile, Arteta needs a pure number 9 striker, a player who can score goals every game. I think that is a transfer that should be Arteta priority, and if he can get him, then Arsenal will look very serious as trophy contenders next season.