I tried to do the investigation myself. Can you help me now?
Unfortunately some people try to do their own investigations. Some people may not understand that it takes many years of experience and practical application to become a proficient investigator. It is also legal for a licensed agency to conduct investigations but a regular person may be breaking the law if they try to be their own investigator and any information they obtain might not only be useless but can result in it being used against them. Certain states have stalking laws that can results in criminal charges if you perform your own case.
If you try be your own investigator you may compromise your investigation making it more difficult and more expensive once you decide to opt for a professional agency to take it on.
It is better to invest the money with a reputable agency that specializes in matrimonial/domestic cases and have it done right the first time. In most cases judges will dismiss any evidence that is provided by you, a friend or someone directly related to you. The judge will hold a lot more weight to evidence that is gathered by a non-biased, experienced, licensed private investigator.