Martinelli is a hardworking player who cares deeply about succeeding at Arsenal. He is aware of the social media criticism of his performances and the discussion about his place in the team.
That would be hard for any player to deal with and, while that scrutiny is part of the ups and downs of a professional football career, it does not lend itself to players creating off-the-cuff moments that can win matches.
He scored 10 goals in 51 games and registered six assists in all competitions last season, which is a solid return but maybe not one of a top winger at a team competing for the title and going deep in the Champions League.
One of Martinelli's best moments did come in the Champions League when he scored the winning goal at the Bernabeu in the second leg, after Arsenal beat Real Madrid 3-0 in the first leg to ensure their place in the semi-final.
The change in Arsenal's style could also be one of the reasons for Martinelli's downturn in form.
During his best season in 2022-23, Martinelli - who signed for Arsenal in 2019 - scored 15 goals in all competitions and registered six assists.
Arsenal were a lot more open during that time and the attacks allowed them to develop more naturally.
Arsenal finished second that season, their first of three second-placed Premier League finishes in a row.
Since then, Arteta has changed tact - Arsenal now play with more control and are more considered in their build-up.
That doesn't necessarily suit Martinelli, who thrives with open spaces to run in to.
During the last campaign, the Gunners were decimated by injury to attacking players and Martinelli had his own fitness issues.
Arsenal struggled to create against teams who defended in a low block and resorted to crossing the ball a lot more with little success.
This season Arteta has again changed his side's style, with the Gunners utilising a more direct, transitional style in the hope it will get the best out of £64m striker Gyokeres.
That change may well end up benefitting Martinelli, who is one of the quickest players in the Premier League, and the balls in behind the opposition defences may give him the chance to get through on goal quicker and into better areas.