Yes, maybe if Arsenal only focused on the Premier League, Arsenal would have the opportunity to win the Premier League trophy because for several seasons they have always failed to become champions in the EPL. Indeed, if you look at the tight competition in the UCL season that has just ended, of course there be many strong clubs like Manchester City in the 2023 season. 2024 who failed to advance to the final. and Arsenal will certainly have the potential to face difficulties when competing in the UCL 2024-2025.
but in my opinion, in this case it depends on Arsenal's performance and also depends on Arteta's technique because of course if a team has good performance it will of course be better to win both (the Premier League and the Champions League). However, if Arsenal focuses on the Premier League, it will certainly make it easier for Arteta's troops to become champions in the EPL.
Yes, of course to be successful it certainly takes time and indeed if Arsenal can succeed in winning the title in the EPL in the coming season it will certainly make Arsenal appear more confident in the 2025-2026 UCL season. But of course we won't know what will happen to Arsenal in the UCL in the coming season, but what is clear is that I see Arsenal will definitely have the potential to perform better than last season.