I've seen folks struggle to retract slides as well. Usually they were pinching the rear of the slide with the support side thumb and index finger as they pulled rearward. That's just poor technique and easily remedied. If proper technique is applied and the problem persists, a different semiautomatic pistol is in order. It's sure easy to retract a slide with a RDS using pretty much anything to press against. Many physically weak shooters also find the longer and heavier revolver trigger problematic.
Overall, a semiautomatic is easier for me to manipulate, especially one-handed. I do love my revolvers though and shoot them more these days. The affectation is a pleasure to bear.