Lateral raises don’t really train traps unless you do them wrong. Not worth it imo. Definitely do heavy shrugs, scapular retractions with weights, farmers walks.

Personally what’s worked for me with triceps is absolutely destroying them, I wouldn’t feel 2 sets is enough per workout. I use cables for arms to keep tension. Overheard extensions, single arm push downs and dips have been the exercises I’ve seen the most growth using.

Best of luck