I also had the same thought. Arsenal will have a bigger chance if they only focus on the Premier League because if their target is split into two then it will require the right strategy and how they rotate players, and the potential for player fatigue and injury will also be greater. However, if you look at Arteta's character, I don't think he will easily give up their chance in the Champions League because as we know, Arsenal has never won the Champions League. So that will definitely be an ambition for every Arsenal coach and player.
No need to worry because all the teams currently competing in the Premier League are also competing in European competitions so I think they will take advantage of all the moments. For now I agree that Manchester City have a closer chance of the title this season while Arsenal and Liverpool have to try harder and these two teams also still have matches scheduled at the end of the season. I personally would like to see Liverpool win the title but who knows it looks like they need a miracle or luck because the situation is not easier than Manchester City.