Capped delts with constant band tension.
Lead with your elbows and keep wrists neutral, don't shrug the traps up.
Standing on a band and raising your arms out to the sides puts the side delts under a resistance that climbs as your arms rise, so the hardest moment lands exactly at shoulder height where the delts are working their hardest anyway. There's no swinging a load through the easy bottom range, the band keeps you honest from the first inch. It's the shoulder-width builder you can do anywhere, and the slow, resisted lowering is where a lot of the growth stimulus lives.
They load the movement differently. Dumbbells are hardest at the top and easy at the bottom, the band builds tension progressively and never lets the delts fully relax. Plenty of people alternate both, and if you train at home the band version covers you completely.
You're shrugging as you lift. Keep your shoulders pulled down away from your ears and stop the raise at shoulder height, going higher hands the work to the traps.
Widen your stance on the band or choke down on it to shorten the working length, both crank the tension. A slower lowering phase also adds plenty without changing bands.
