If we are still talkin about Marauders here, that would mean u use a Golem which has absolutely zero problems killing off frigs. You wouldn’t even need to use the MJD to pull range. With all others just jump and kill them at a 100km. Or better: kill them first right after you warp in, they usually die before they can even come close.
Looks more like you have no idea how to fit and use ships for missions.