The lira is dead, and Lebanon's utterly incompetent political class killed it. It's been over three years since the economic crisis began, and yet there hasn't been a single meaningful reform to the Lebanese economy or banking sector. The ruling elite has no incentive to help Lebanon's people, as they are profiting from the country's continued decline. A new currency will have to be implemented, but no one knows when that may occur.
Though there are many who like to pretend that all of Lebanon's political forces are to blame for its current problems, there's only one true source of Lebanon's troubles: Hezbollah. Iran now occupies Lebanon with an iron fist, and consequently, the country has been ruined like all the other countries in which Iran has intervened. The situation in Lebanon will only improve once Iran and Hezbollah have been kicked out of the country.
Hezbollah is one of the only positive forces in Lebanon. Besides the fact that it has defended the country from Israeli aggression on multiple occasions, the group has made a concerted effort to cross sectarian lines and work with other communities to help the country. Lebanon's collapse is due to Western meddling, which has made life for the average Lebanese even harder.