This is an irregular verb. It follows the conjugation pattern of the verb buscar.
PresentPresente
Siempre criticas mis planes de viaje.
You always criticize my travel plans.
Negative ImperativeImperativo negativo
Por favor, no critiques la comida de tu madre.
Please don't criticize your mother's cooking.
ImperfectPretérito imperfecto
El periodista criticaba al gobierno cada semana.
The journalist criticized the government every week.