help me fight for my rights

this is a translation of google, My name is David Montenegro, a young man of 20 years, last year I worked for the state of Guatemala, in a public institution, on December 31, 2021 my employment contract ended, according to the law they were obliged to pay me my labor benefits, but they did not do it and now I want to start a legal battle to be able to demand my inalienable right to benefits, unfortunately I do not have money to pay for a lawyer so, I kindly hope you can help me to be able to fulfill my rights as an individual and free person.