If the state already has to recapitalise the banks, it should take over the real estate held by the banks (from mortgages, failed construction projects, etc.) in exchange for the money invested in them. The State should take ownership and management of these buildings and then move all the rented premises where it has all sorts of bodies into these new and empty buildings. The bank will have capital, but it will no longer have useless and over-inflated assets. Of course, these properties would not be 'bought' at cost, but at market price. If this means certain losses for the bank (because the bank's assets would be reduced), the bankers will just have to swallow the fact that they are making a loss and that they will not pay themselves bonuses at the end of the year. In the long run, this is the best thing, for the country and for the banks. And banks should be banned from making any loans for projects that are doomed to fail in advance (the new buildings of the last few years have been half empty, so why build new buildings?).
If the state does not need the facilities, then let them equip youth centres and similar forms of organisations so that there is some benefit from everything. Young people have nowhere to go in their free time, and then they do stupid things...