Chelsea made a truly magnificent start to this season. Their resounding victory over Paris Saint-Germain in the final will likely be forgotten by the end of the year. The events that followed also made it impossible to forget. Paris Saint-Germain were clearly the favorites before the match, and many, even over 80% of betting enthusiasts, were betting on that result. However, Chelsea achieved a very low probability of winning by three goals, securing a Premier League title that will be a threat to other teams. They could now be a Premier League title contender because they've learned how to play in big matches.
The Premier League is always fiercely competitive, with several teams competing quite closely. Although Chelsea has shown good performance, I don't think it will be easy for Chelsea to win the Premier League title next season, even though they are the favorites.
Their achievement in the Club World Cup is certainly quite positive, especially for the mentality and confidence of the Chelsea players heading into next season.
For the fact that Chelsea won the FIFA club world cup do not mean that they are the favorites to win the Premier League title next season. Chelsea has the ability to become title contenders but in reality they are no where close to coming out as the title's favorite. Chelsea have a great squad but they can't be compared to teams like Liverpool, Manchester City and Arsenal because those teams has better squad and can be more competitive for the title than Chelsea. You are right by saying that Chelsea doesn't have the confidence and mentality to withstand the Premier League pressures and emerge winners. Enzo Maresca has done great job recently, he has really changed the football ethics at Chelsea which led them to winning the Europa Conference League trophy and the club world cup but when it comes to the Premier League the atmosphere is always different and for me i think that Chelsea will even do better at the Champions League games than the Premier League.