Arsenal have not lost a single Premier League game in 2024, we may be surprised at the end of the season if Arsenal wins a trophy, their performance has been much better than last season. I also don't think Arsenal will struggle to compete in two competitions, they won't become weak since they have so many players to replace on when others are weak. We are only scared of Arsenal since they did not win the league previous season. Manchester City and Liverpool are also competing in other competitions, it is hard to predict if this will affect their performance. I think the best thing for Arteta is to focus on their Premier League games, as the Champions League will be very tough.
Yes, it's true that if Arteta wants to focus on winning the title then it's best to focus on the EPL because Arsenal probably won't be able to beat Munich in the UCL or win the UCL title this season which is full of tight competition, Arsenal still needs a lot of time to prepare themselves so they can reach the UCL final at least for the next few seasons, currently in my opinion, focusing more on the EPL is the right way to pay for their failure last season when they failed to win the EPL and were taken by Manchester City.
I think maybe Arsenal doesn't want to make the same mistake by letting Manchester City win the EPL this season, because after Liverpool's draw against Manchester United made Liverpool's points gap with Arsenal and Manchester City even tighter, the EPL this season is really interesting to see how We see that there are three clubs competing fiercely there to win the EPL title. If Arsenal wants to focus on winning the EPL title, Arteta should maintain the performance of his players, let alone having to play matches in the UCL as well. Arteta must be smart in rotating his players well.