What’s the worst can happen if i file Chapter 7 bankruptcy without consulting an attorney?

Simple, your BK case might be dismissed. And this can happen due to a variety of reasons like improper documentation, filing under the wrong chapter, opting for wrong property exemptions, and so on. So, better work with an attorney, provided you don't want to mess things up.

Well, there are lots of pitfalls. But, I'm going to elaborate only one point.

Only a bankruptcy attorney knows what bankruptcy can or can't do. After analyzing your financial situation and checking all the documents, the attorney can tell if you need to file bankruptcy. You can know if you should go for bankruptcy or look for other alternatives.

Your bankruptcy case might be dismissed. So, you won’t be able to get rid of your debts and it will continue reporting in your credit reports for 7 years and 13 years for Chapter 13 and Chapter 7 respectively.

Bankruptcy laws are very complex to understand by any common people. In a chapter 7 bankruptcy case, you may need to fill out extensive forms and need to follow all rules and procedures governed by the local court. So, if you don't wish to hire an attorney who can get you through this necessary research, then you're literally risking your nonexempt properties and your debts might not also get discharged.