What should someone do, when, depending on the circumstances that he doesn't have conditions to change, by his knowledge, especially by having a PMP certification, he is perceived as a negative risk

Don't fight the system, use it.

Approx 10% of the people I helped get the PMP over the past 15 years experience a similar problem. They go back to their organizations, and apply their new knowledge and confidence (to know how to do things). This is not well perceived, it is seen as arrogance, hybris, or just a changed conduct threatening power structures.

My advice is to apply stakeholder analysis and engagement, get supporters and become political. Or move. Most move.

The organization is not ready for a PMP.

It maybe time to move on

Do you know why people are reacting negatively to the PMP holder? Some might fear the accountability project management brings to an organization, particularly when they know their incompetence, inefficiency or dishonesty will likely be revealed. Others detest the increased bureaucracy they believe project management will bring about. You can’t do anything about the former group, but you can address the latter group’s fears by performing successful projects for those open to project management. When people see others’ projects succeeding while their own are experiencing problems, they will likely begin to change their minds regarding project management.

Actively demonstrate the benefits a PMP Certification brings to the organization. If not received start looking for another opportunity.