Looking at the previous rounds, my opponent has played rock twice, scissors once, and paper once. There seems to be a slight preference for rock. Also, I notice that the opponent hasn't played the same move twice in a row yet, following a pattern of rock → scissors → rock → paper. Since they just played paper in round 4, there's a good chance they might play scissors next to continue this non-repetition pattern. Playing rock would be effective against scissors. Additionally, I haven't played rock yet in our matches, which might make my move less predictable to my opponent who might be analyzing my patterns.