What to do after deportation

I know someone who was deported to Mexico. They were just dropped on a street in an unknown place with a bunch of other people. Another bus of men came and asked them to pay for safety, stating recently deported people are being targeted by kidnappers and robbers. Everyone but him got on the bus, and he wanted to go but a stranger offered to let him charge his phone. He decided to stay behind in hopes he could get a hold of someone to help him. He managed to get a hold of a friend who got him a hotel for a few nights while they made a plan. He learned from some locals that the people on the bus he almost got on were all being held for ransom.

He was able to get a flight to a better area that's more friendly to Americans, but only through his friends in America helping. They got him an apartment for 2 months so he can find a job. But he also doesn't have any Mexican documentation since he has been in America most of his life, and they require five forms of identification to work. Everything he owns is still in America.

Idk if people know what happens when someone is deported. But my question is, what options does he have? I find tons of resources on what to do to prevent deportation and your rights in America. But what can he do now that he is in Mexico?

Update 3.15.25: He located some extended family and was able to get his birth certificate but it HAD to be from his birth city. He luckily had help with travel, idk what others do if they don't have that help. He's gotten his CURP as well, but the voter registration is hanging him up. All the jobs and banks are saying they won't work with him without it, but he's told he can't get the registration until a specific election in June. He was told they are concerned about fraud. So he's just stuck right now, unless he finds an under the table job for a while.

Thank you for the links and info everybody!