Arsenal are quite impressive with their style of play but they have to do more if they must win a trophy. Being intentional about this pursuit for the title is what they must do. And to achieve this they just have to play every match as though it were their final. If the can play all matches with equal level of seriousness I believe they will add a title to their effort.
We all know how competitive the premier league is and every club at every point in time is desperate for a point, it's either they need a point to retain their position or get closer to the top 4 or 5 or even stay above relegation zone so Arsenal treating every single match has their final will go a long way.
The Premier League is very competitive. If you can't maintain a good performance, it is not possible to win the title. There are several teams fighting for the title. At the same time, most of the teams in the Premier League are quite strong. Arsenal's squad needs to be strengthened if they want to win the title. They need to add more talented players to the squad. At the same time, Arsenal definitely needs to strengthen their bench team. They need to keep worthy replacements for the players in the squad. Otherwise, it will not be possible to win the title by dominating a competitive league like the Premier League.