Half of my outlets not working

Trip the GFCI receptacles then push reset. If it will not reset, you do not have power to it. That indeed could be a partially tripped circuit breaker. Turn off all circuit breakers applying light pressure to the off position. Then turn on main breaker if equipped, followed by branch breakers one a time.
Do you have a large inverter? Have you checked it for a tripped breaker? Some have a small red or white button used for resetting.