what happened to the mother juggernaut?

you may recall in the flashback scene of alien covenant, that there was a mother juggernaut in the very center of the engineer village. you know, the one that david docked onto. now after the attack/ bombing, when the covenant gets trapped on the planet, the mother juggernaut is nowere to be seen. there must have been at least one piolit in that ship. sinse the ship didnt chrash, i am only to assume that at least one engineer escaped on the craft. I will go further to say that if My whole village just got bombed and all my friends just got killed I would be pretty mad. i might even follow whoever did this to me so I could kill them. thats what i think the next film will be about possibly. the few engineers follow the covenant to origea 6 were they will attack them. ( this would probably give us some more information n the engineers) one of the engineers gets face hugged creating an ultramorph. everyone gets hunted down by ultramorph.