Arsenal have artetas support after massive disappointment of exiting europa league

I think there may be some confusion here!

Arsenal did not exit the Europa League, in fact, they won the competition in 2019 under the management of Unai Emery, not Mikel Arteta. Arteta took over as Arsenal manager in December 2019, after Emery was sacked.

In the 2020-21 season, Arsenal did not participate in the Europa League, as they finished 8th in the Premier League and missed out on European qualification.

However, in the 2021-22 season, Arsenal did participate in the Europa League, and they were eliminated by Sporting CP in the round of 16.

It's possible that you may be thinking of a different team or competition. If you could provide more context or clarify what you're referring to, I'd be happy to try and help!