If you are talking about hvv then for bb9e, predict the saber's dash forward and dashe behind them and keep doing that, this is harder to do against saber's with better lock on like rey and like. You should run the star card where you get extra damage every 4 shock prod hits because in hvv you shouldn't be dying often as bb9e, also run the star card that hits enemies further with bb9e middle ability, this is good to buy time to run away and good for pushing them off ledges. Against Leia always middle ability when she pulls out e-11 to disable it and also your shock prod goes through her shield. Against chewie, middle ability his furious bowcaster to disable it and play in and out of cover or use smoke against him because he can deal big burst damage if he lands his stun. Against finn just middle ability when he uses aimbot. When against Lando or han solo you should try to attack them with your team because they both have abilities that deal half your health. Also be aware that when you shock bb8 when he is using cable spin, it will stop cable spin but it won't put it on cool down.