Don't play F/GO.
If you think that the gacha in Halo 5 is bad you haven't entered the hell that is the F/GO one. The drop rates are abysmal, the game is grindy as fuck, and even with paying you aren't guaranteed to get anything you want. It was basically made to pray on weak minded nips and separate them from their money.
All hail Sony for shelving a AAA multiplayer fate title for the PC for this mobile shit.
Also TYPE-MOON doesn't have any control over it.