reading defense Help

I'm trying to step my game up a little already good but i would like to know a easy way to read Defense man zone everytime easy. i have play's to kill both easy but i always call them Wrong and get messed up so is there any easy ways to read Defense in madden

its kinda difficult to do it pre snap sometimes cuz they'll man align and bump n run but be in zone so it can get confusing i like to read where the backers are on the field so i know where grass is pre snap then when the ball is snapped i read the safties so i can tell if its a cov. 1 or cov. 2 or cov. 3 or cov. 4 or just man across the board. lol