The Brazilian has not found the net since his opening day strike against Fulham, adding just a solo assist, leading to heavy criticism.
But Willian insists while that he does not have any specific reason for his poor performances, the 32-year-old insists he is always trying to improve.
When asked why he’s been struggling for form, Willian replied: “To be honest sometimes it can be difficult to explain.
“The first game was great for me, against Fulham, I felt I had a good performance and gave two assists. And then, I don’t know.
“I’m always trying to do my best, sometimes things don’t go the way you want. You have to say it’s a part of football and a part of life.
“Sometimes you have good moments, other times you have bad moments, you have to learn from that. And right now, I know I’m far away from being at my best, but I’m determined to work hard and change this.”
Willian also revealed he still has the full support of his manager, insisting he and Mikel Arteta have a close relationship.
“Of course we talk about lots of things together, and I know I have his support,” added the former Chelsea forward.
“That’s great for me, and to have the support of the club, so what I can do is always work hard, give my best in training to try to improve myself.
“This is the only way to get back to good performances.”
Arsenal have had an upturn in form in recent weeks and are now targeting a place among the European qualification spots once again.
And Willian says there is no reason why they can’t push on to claim some silverware this season.
“We need to keep playing our football in the same way that we have recently,” he added.
“I think we have to continue on that way because we can improve every week, and still achieve our goals.
“We want to get back up to the top of the Premier League, it’s still possible for us to win trophies this season so that’s our aim.
“The Europa League starts again next month – there are still a lot of games left to play this season. ‘I know that this squad is capable of winning more trophies.
“They showed it last season before I arrived in the FA Cup and I think we are getting stronger all the time. We have very good players and there’s no doubt we have a squad to win things.”