For next season, Barcelona's confidence will increase after occupying the runner-up standings at the end of the season. Indeed, this is the position they usually get, but from their journey this season, of course this position is extraordinary because they managed to rise up in the second round of La Liga. If you look at their performance, it looks like this team will be back in the title race since the start of the season.
I also believe that next season Barcelona will enliven the LaLiga title race again from the start of the season if they can be very consistent at the beginning of next season.
Because Real Madrid will still be the sole challenger to get the Laliga title again next season so it will be fantastic if Barcelona is able to fight back next season in Laliga because some other teams like Atletico Madrid and Sevilla will also be very good next season.