Two of the last three games were very tough for Arsenal (vs Liverpool and Newcastle). But this match is just a formality for Liverpool who have secured the EPL Trophy, perhaps the same thing happened when they lost to Chelsea last week.
The game against Newcastle is a bit tough, but the result of this game will not affect them anymore if they manage to beat Liverpool because Arsenal only need +3 more points to secure a ticket to the UCL next season.
Yes, it seems that the match that will definitely be much more difficult for Arsenal to face is against Newcastle, because Newcastle definitely needs a win to stay in their current position. So in my opinion, Arsenal would be better off winning against Liverpool, because it seems that Liverpool are not too serious anymore, because they have secured the English league trophy. So winning or losing will not be Liverpool's goal at this time. That is why Arsenal must take advantage of this to secure their current position and to secure a ticket to the Champions League. The game against Newcastle is a bit tough, but the result of this game will not affect them anymore if they manage to beat Liverpool because Arsenal only need +3 more points to secure a ticket to the UCL next season.
Because if Arsenal loses to Liverpool and then doesn't get good results when facing Newcastle, there is a possibility that Arsenal's position will drop. Because currently the achievements of the teams in 2nd to 5th place are not too far apart. So just one mistake can be fatal at this time. That is why Arsenal really has to put in their best efforts, so that they can be even safer. And for the Arsenal vs Liverpool match, I personally will bet on Arsenal in this match, because as I have explained, Liverpool currently seems to be just playing around with the remaining matches.