Is it obligatory for a person to have citizenship?

Citizenship is the connection between a person and a state. This connection reinforces their mutual rights and obligations.
The state must provide a person with his rights. People can hold more than one citizenship, but they also may not have it at all. Such people are called stateless. Moreover, this person must live under the laws of the state in which he is located. But he has no civil rights, only human rights. Based on this, it can be concluded that a person can renounce the citizenship of his country and become a citizen of another, or he may not have citizenship at all.

One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.