Arsenal and Newcastle's game would be an interesting one to watch but I don't think that arsenal can win Newcastle in their current state.. Newcastle are coming for the second position and they are eager to get it... I don't know if arsenal are still weighed down by the fact that they got kicked out of the champions league... Liverpool has nothing to fight for so I expected them to win Liverpool in their last game like Chelsea did but unfortunately the game ended as a draw.
With Arsenal's current condition, I personally also highly doubt that Arsenal can win against Newcastle. Because currently Arsenal seems to be experiencing a significant decline in performance, perhaps due to their failure in the Champions League and also some of their players are injured. So with this, I also highly doubt that Arsenal can win against Newcastle. Because as you said, Newcastle currently has a target of finishing in 2nd place in the Premier League, because Newcastle's points difference with Arsenal is also very thin, which is 2 points. So with this, Newcastle will definitely fight very hard to win the match against Arsenal.
In addition, Arsenal's head-to-head record with Newcastle can also be said that Newcastle is far superior to Arsenal. Because from the last 5 meetings Newcastle has won 4 matches and lost only 1 to Arsenal. So with this, it is increasingly clear that Newcastle is far superior to Arsenal. Therefore, the possibility of Newcastle winning this match is indeed much greater than Arsenal. So if you want to bet, I think choosing Newcastle would be a very good choice.