I’m sorry you had to go through this. Alas, this can happen in most civilized countries that protect renters. We rent out an appartment in Austria, and had a similar, but less devastating situation. In the end, public welfare paid up for them, because they did live on welfare. Interestingly, the eviction failed because the renters just „forgot“ to move everything out of the apartment, and over the next 2y, welfare paid all dues because they couldn’t find a cheaper stay for them. Then, they moved out on their own.