Use the police
Then, use the police reports to evict.
Act or live with it.
If you will not use a lawyer, then you will have to dig in, study the law and do it yourself.
In my jurisdiction, success rates plummet to less than 25% when parties represent themselves.
I am sorry to hear that you are dealing with a loud neighbor, it sounds like a horrible living situation and I empathize with you.
Complain to the police if it is really that loud, and if the police find validity, it could lead to eviction for your neighbors (consider this in depth because I would never want to throw a family out on the street, I'd rather continue to try to work with them).
In addition, talk to your landlord about possibly moving the noisy neighbor or be willing to move yourself. Generally, here in Arizona, landlords have a duty to provide "quiet enjoyment" of the leased premises, and the tenant may terminate if "enjoyment is substantially impaired." This is usually utilized when a fire or something else destroys part of the property, but you can try to talk to the landlord about it.
This does not create any attorney/client relationship, just some advice to try to help you out.
Benedetto Torgenson, PLC