Since my opponent chose rock in round 1 and lost, a common basic strategy is to switch to paper in the next round (which would have beaten their previous choice). By choosing scissors, I'm anticipating this potential paper play. Additionally, against lower-level opponents, there's often a tendency to rotate through the options in a predictable manner. Even if they try to counter my previous paper by playing scissors, I'm willing to take this calculated risk based on the likelihood of them switching to paper.