I believe this is a very well written essay which shows your good writing skills. Here is one point I want to share.
Firstly , it is felt that the main cause of increased crime rate among young individuals is unemployment .
Because you provided solid evidence to show the link between increased crime rate and unempolyment, I suggest you choose 'considered' here, which looks more formal and confident.
Moreover, in my knowledge, it would be a betterstructure containing 'Firstly', 'Secondly' and 'Finally'. As what you want to do is to start this paragraph with a topic sentence here, I think 'Unemployment could be considered as the main cause of increased crime rate among young individuals' is sufficient.