I would start reducing her take aim damage to 120. If pharah can’t two tap, Freija shouldn’t either knowing she has better weapon than her, and she is not Hanzo and can use primary to finish up targets or just headshot them.
Even I think the only thing pharah have better is having fuel to stay in the air a little more time, but her movement is more predictable, she changes the push explosion with the primary attack of Freija, and she doesn’t have double dash.