My 7-m.o baby doesnt want to sleep in a crib. Any tips on how to make her comfortable in a crib?

You can try putting one of your old shirts (or anything with your scent on it) in the corner of her crib, tucking it under her crib sheet so that it will smell of you. Alternatively, sleep on her crib sheet for a few days for the same effect. Having your smell around may help comfort and calm her.