According to your situation, you need to change your exercise style. You can mainly practice deltoid muscle and try not to practice trapezius muscle. When practicing deltoid muscle, trapezius muscle is not so obvious.

The specific method is:

First, try to do less trapezius muscles and take part in more sports, such as dumb neck and barbell push.

Second, when doing barbell or dumbbell push, be careful not to let the trapezius muscle exert its strength as much as possible, and try to press the shoulders down.

Third, when doing dumbbell side lifts, the elbow and wrist joints should not be too straight, and they can be moderately bent, which is beneficial to let the deltoid muscle play its main role and the trapezius muscle exert less force.

I hope my answer is helpful to you!