Yes. Insurance company adjusters can easily take advantage of personal injury victims. An adjuster works for the insurance company, and their job is to help the insurer pay as little as possible for your claim. They do not want you to get a lawyer even though they have a team of legal experts helping them.
Your attorney can also help you in other ways including through:
Investigation - You may not know where to start investigating who is liable for your injuries, but an experienced lawyer will know what steps to take.
Preserving evidence - You may need to preserve traffic or surveillance videos that recorded the incident. An attorney with experience investigating these cases will know who to issue demands to for the preservation of evidence.
Interviewing witnesses - An attorney can interview witnesses under oath to strengthen your case. This can reveal crucial details you may not be aware of regarding the accident.
Negotiation strength - An insurance company knows a lawyer who understands the laws and the normal process for personal injury claims is less likely to put up with unnecessary delays than a victim might. They also know that they typically cannot get away with making unreasonably low offers to settle if there is an attorney involved.
These are a few reasons why it makes sense for you to hire an experienced lawyer with a proven history of getting results for their clients. While past successes do not always guarantee future success, you can feel confident those successes did not happen by mistake.