Maybe Rudi Garcia will do better than Spalletti. However, time must be given for this. It is highly unlikely that Rudi Garcia will do something extraordinary next season and Napoli will win the title again. Because Rudi Garcia is not yet familiar with this team. And more importantly, several of Napoli's star players have left the team. The effect can certainly be seen in Napoli's performance. The likelihood of consistently good performances from Napoli next season is slim. Juventus or Inter Milan will probably dominate Serie A next season.
It's not right for me to talk before the season starts. They said similar things about Naples last year. Napoli won the league by a clear point margin. We can see a similar picture this year. It will be announced a few weeks after the start of the league. I think Napoli will perform well again.
I don't have any further opinion about Napoli's appearance next season because I don't know how well Rudi Garcia way of working fits the capacity of each player in the team. What is clear is that I feel the integrity of the players between last season and now is a benchmark for the team's performance next season, although in the end it still depends on the handle of their coach.