I think for next season the results will still be the same for Barcelona to be right under Real Madrid and maybe that will happen for quite a long time. The main problem that causes this is the financial support of each club and as long as this is an unresolved obstacle, Barcelona must face that reality.
Even though Barcelona has a coach who is rich in experience like Hansi Flick, in reality it hasn't changed at all, but I hope that at every El Clasico meeting, Barcelona will provide equal resistance, even if possible, they can steal points from that match. Dani Olmo still seems far from Barcelona's reach and therefore it is difficult to convince the player to join at this time.
The arrival of a new coach will of course provide several changes and improvements to the Barcelona squad next season, but without the addition of several new players it is of course difficult for the new coach to optimize and maximize the current squad, the problems currently existing at Barcelona are of course even greater and complex so it really requires the right solution to overcome this, financial problems are the beginning of every destruction of Barcelona today as a big club before, without fixing this main problem of course it is difficult for Hansi Flick to be able to bring many changes to Barcelona in the future.
Bringing in Hansi Flick could indeed be a solution because of the experience he has, but even so, Barcelona shouldn't have much hope for Hansi Flick being able to bring Barcelona back to the championship track because after all, the competition next season will be very tight and it might even make Barcelona even further behind Madrid in the future, currently Barcelona and Madrid have a very big difference in terms of the quality of their players, so I think getting second place will also be very difficult because we cannot deny that Girona and Atletico Madrid will try to strengthen their current teams to competete in next season.