Arsenal have lost their last four games in all competitions and Wenger's admitted the Gunners need two of their rivals to "collapse" in order to finish in the top four.
Arsenal went into the match on the back of consecutive 3-0 defeats to Manchester City in the EFL Cup final and Premier League, and they found themselves in more trouble when Dunk broke the deadlock seven minutes in.
Arsenal fans were angered by the performance of the players and continued their chants for Wenger to leave his position at the club, although a number of them took to social media to heavily criticise a number of players.
Janusz Michallik breaks down Arsenal's loss at Brighton and explains why it looks like Arsene Wenger's side have waved the white flag on this season. When you go through a hard patch, uncertainty before the game is the quality of the performance we can give.
"It is very hard, almost impossible now, we are too far behind", the Frenchman said after Arsenal remained on 45 points, trailing north London rivals Tottenham Hotspur in fourth by 13 points. Securing Champions League football through the top four is now highly improbable while you wouldn't back them to win the Europa League in this kind of form.
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He recorded 44 sacks in 50 games with the 49ers before registering 3.5 in nine contests (seven starts) with Oakland in 2015. It goes without saying, the most important outcome is that all parties involved can get help and safety during this time.
"I think it has been hard for everyone, maybe the first time for all of them", Koscielny said.
"We are hypothetically speaking before people jump ahead of everything, [but] I have never backed down from a challenge since I was young".
He added:"You focus on your job". You don't back down from a challenge, you always think that you can.
Now part of Pep Guardiola's backroom staff at Manchester CIty, Arteta made 150 appearances for the North London side during his five-year stint at the club.
"If I had listened to people who were talking about where I was going to be, I would not have been here". Then we'll see where we go from there. Sometimes you have to admit that they are better or are in a better situation.