This is the first time Napoli have been beaten by Lazio since 2021 or in the last 10 matches Napoli won 7 times so it's normal that almost everyone is a favorite for Napoli to win this match, especially Napoli playing at home. Apart from that, we know that Lazio have played badly since the start of the season they have been defeated 2 times and suddenly Lazio beating a favorite team like Napoli really doesn't make sense I know this kind of thing is normal in Serie A because Serie A is the most controversial league.
I wouldn't say Napoli's chances of winning the title are getting smaller I believe they still have a great chance, this defeat is part of the process and being 3 points behind is not a big problem Serie A still has 35 more matches to play let's see how it goes.
as has been discussed here, currently the teams in Series A are a little difficult to predict because several top teams are still performing inconsistently so that in terms of appearance their performance is still uncertain and this is the same as I said at that time that there is a possibility that all teams and the new players in Serie A are still in the process of building chemistry at the start of this summer so there are still many teams appearing inconsistent, even Napoli as last season Scudetto holders also experienced this and I think this is normal and we are too early to speculate about the team holding the title. series A because there are still many matches to come and also the points obtained by each team are still small. It is still uncertain who will hold the Scudetto this season. but for the time being there are a number of teams that are performing a little well and also the chance of getting the series A title might just happen and we all just wait for the next 2 weeks we will see the prospective team that will dominate series A.