I don't want to sit with my coworkers during lunch
Do you not like your coworkers?
Some of them are prics and morons.
Those are strong names to use, but you're not obligated to join anyone for lunch if you don't want to. Just make sure not to actually call them those names.
Of course, who cares.
I think they would care if you told them that and it would be harder to work with them. Maybe try getting to know them and you may change your mind.