Basal is supposed to be what your body uses every day just for existence.
Lifestyle is supposed to be how many calories you use doing your typical activities.
They're both debateable ... um ... wonky. Fiddle with it until you get a number that better represents what's really happening.
Keep asking questions we'll help you
Eat good food. Move yourself. Lift something.
You'll be surprised how much you don't miss grain.