2020 Passat won't start in cold weather

It's like -14f, -20f windchill. The car turns on- the electric functions, but I only get one or two spits before the engine stops trying. I've got the emissions control lamp signal on and the battery warning signal on.

AAA can't help me because my tabs are expired (the car I am driving belonged to my grandma who is now in memory care- she could never remember to renew).

Anything I can try easily myself so I don't have to pay a mechanic? I'm fucking broke- hence the borrowed car with expired tabs.