Require your employer to conclude an employment contract with you in accordance with the law. If he refuses, you can file a lawsuit in court.

Find another job where you will have a declared employment relationship and social guarantees. You can use the services of employment centers or other resources to find a job.

Contact the State Labor Service of Ukraine for consultation. You can find contact information at the link: https://dsp.gov.ua/kontakty-dlia-konsultatsii-pratsivnykiv-ta-robotodavtsiv-z-naiaktualnishykh-pytan-pid-chas-voiennoho-chasu/ .

Do not agree to undeclared work, because you lose your rights and opportunities. Declared work is your future and your dignity!