When you talk to customers, you tell them directly that you can't guarantee that you can win their case. However, what you can guarantee is that you will do whatever you can to help them avoid this mess.
Membership in the criminal defense lawyer association has the advantage that anyone wishing to know your experience will no longer question your skills as a lawyer because you have previously positioned yourself among your colleagues.
But how do you choose your own criminal lawyer? For this you need to find someone who specializes in this field. If you don't know, ask your family or friends. In addition, they participate in the protection and drafting of the Constitution, improve the administration of justice, and raise public awareness of the aims and duties of criminal defense lawyers.
The Criminal Defense Advocates Association also advocates for and receives information about the new law through its staff as it affects their practice when they need to assist clients in open trials. Each country has its own criminal defense organization. This organization ensures that everyone accused of crimes has fair representation in court.
The technique they employ is to provide legal services to people who can't afford the best lawyers. Many call them public defenders who will do whatever they can to protect your privileges.
If you think the price is affordable and you are comfortable talking to the person, retain the person's service as your own lawyer.