Getting so many fumbles. basically 75 percent of the time I get hitsticked its A fumble
Make sure you're not running back to back with the same hb and don't eat hit sticks head on, angle your back away from the impact while holding RB. If you are extremely run heavy, you may want to switch to conservative.
Tank. 1 ap on alot of players.
Stop running the ball so damn much. I love making heavy runners fumble. I only run dollar 3-2 DB fire and they try it all the time. And then BOOM! fumblerooski, I love it. I hit stick if they don't have TANK ability, if they do then it is gang tackles and ball strip spams and FUMBLE. However, I understand you may not be referring to run plays exclusively. So, as stated above don't take hitstick tackles head on and use timely stiff arms as you are being tackled. And please make sure to check your players energy level. If they are fatigued they have a greater chance at fumbling.