If you need a lawyer and cannot afford an attorney or lawyer you can be provided a court appointed lawyer or attorney if you've been arrested.
You have a right to an attorney or lawyer that is court appointed although the court appointed attorneys and lawyers are not the best they are better than having no attorney or lawyer at all.
If you cannot get a court appointed attorney or lawyer then you can represent yourself in court if you know what you're doing.
If not then try going to a law school where they may be able to help represent you in court.
There's also legal aide societies where you can get help paying for an attorney or lawyer if you cannot afford to pay for one.
Also some attorneys or Lawyers will represent you in court and you only pay them if you win in court.
Such as for a car accident you can get an attorney or lawyer to help fight for compensation in court and only when you win you pay the attorney or lawyer out of those winnings that you get.