If it's not a secret, why aren't you communicating? Did you have a disagreement? Regarding the EB-3 visa, you first have to choose a state and a job where you will work for at least one year. Then, apply for the position. Later, you will need to go through three stages: PERM labor certification, I-140 petition, and adjustment of status or consular processing. You can read more about the
Path to U.S. residency for Brazilian workers on the eb3.work website. Keep in mind that obtaining an EB-3 visa takes a very long time — about three years — so you should apply as soon as possible.