ok , i am new in bodybuilding. i have workout for quite sometime , but then i notice i have difficulties on back and shoulder training.
at first , i always do lateral raise ,front raise , and presses , i will feel the pain is on my traps .. maybe my posture were wrong , so, i adjust it and eventually it shifted to the shoulder. My problem is the exercise that it always hit on the front delts. so i wanna ask are they any tips or guidance to take note for raises to actually hit the mid delts?

next is back , i have a weak back muscle , i cant do a wide pull ups , but a narrow grip i can pull for 5 to 6 times .. same question are they any type of rules to take note on back training? .. if there is something wrong plz give advice ,

oh ya b4 i forget i always complete my workout with 12 reps 4 sets for shoulder workout, for pull ups i do 8 reps for 4 sets .

traps dominated guy? don quite get it .. jus go light weight is enough? but then do wide grip and narrow grip focuses on different muscle?

ok .. thx bro .. will try it out ..