Grammar fix

legal advice

advice about the law

help or information given by a lawyer or expert about what you should do in a legal situation.

collocationB1common

Hear it in context

Notice where the phrase sounds natural.

If you're not sure what to do, it's best to get legal advice before signing the contract.daily life
In my opinion, people should always seek legal advice when dealing with important documents, because it can prevent serious problems later.IELTS speaking

Pattern: legal advice (about/on something) | get/seek/need legal advice

WrongI need a legal advice.

RightI need some legal advice.

'Advice' is uncountable — 'some legal advice' or 'a piece of legal advice', never 'a legal advice'.

Patternlegal advice (about/on something) | get/seek/need legal advice

Choose the version that sounds natural in speech.

Stiff You ought to procure professional counsel of a legal nature.

Natural You should get some legal advice.

'Get legal advice' is natural; 'procure professional counsel of a legal nature' is absurd.

Words that usually travel with it.

Not the same as 'legal information', which is general facts about the law, not personal help.