Why do the youth start to commite crimes?

Regarding the documentary which stated that the crime rate in youth have risen 50% last year, studies carried out by the local university (only capital if specified) reveal the connection between the poor economic situation that the country is going through and the booming in crime among young people. The university has developed a pilot project with 300 families, all of them with economic difficulties, and some with an unstructured situation. The aim of this project has been to compare the different scenes through which a young person, in a poor family, has to deal with. The results show how the fact of living in a unstructured family is not crucial, the point is at which stage of their life their family becomes an unstructured one. According to the project, the worst stage to go through a family disorder is at puberty, in which they try to fill up their absence of family with other teenagers in similar situations. All of them jointed by their anger and frustration that are lunched (aimed?) at the society in order to feel they have control over something. They find a new family for which they would do anything in order to not suffer a disjunction once more. (they find a new family for which they would do anything, so as to not suffer from the disjunction any more?)
My opinion, from what I could understand and gather from my experience in some a well-off and yet problematic (troubled?) school, is a little bit different and I take issue with their claims.

(Granted my experience, coming from a well-off yet troubled school is different, is a little bit different. However I take issue with their claims)

In my respect (understanding?), puberty is one of the most difficult stages and teenagers need to feel free to develop their own personalities. and It doesn’t matter if you belong to a family of means or a poor family, in both cases they would do anything in order to find their way and fight against whatever kind of repression. and Bearing in mind that they are not old enough to properly face properly their feelings, (being a teenager can be?) an utter disaster and can lead to crime, and unstructured family are much more likely to suffer from it.

Well written improvingenglish :D, to be honest your level is quite high, so many of these alterations aren't so much to correct the grammar of what you were saying but to aid in the cohesion of the article. Most are nuanced points, but since you have a good grasp of the basics, I did a bit more higher level editing.