Fiba

Can anyone help with this?

Is muscle soreness/tenderness the day after training important for growth ?
All my muscles are tender after training Chest , tris ,Abs etc but i have never experiance sorness/tenderness in my side delts no matter how hard i train them.
Iv tried supersetting side laterals with upright wide grip rows , lying on a 45 degree bench doing 10 sets of 10 of lateral raises . Iv even tried 20 sets on the lateral machine and cables.

Dont know if this will help any but
Shoulder press bar --60kg
shoulder press machine ---50kg
bench press---- 100kg

The above are my lifts for 8 reps , might help give an idea of what level im at for any advice


thanks Fiba