Wireless Sensor Network (WSN) is a combination of a huge number of sensor devices that get distributed in a certain area to perform a specific task in the Internet of Things (IoT). In general, sensor nodes consume more energy at the time of data transmission between them hence it is utilized in applications such as healthcare, military, industries, and so on. The parameters considered for the performance analysis in the proposed protocol, Optimal Path finding protocol for WSN based on the Robust dynamic Clustering technique and Effectual Relay selection process (OPRCER), are energy efficiency, packet delivery ratio, and end-to-end delay in comparison with earlier methods such as Galactic swarm optimized convolute network and cluster head elected energy-efficient routing protocol in WSN (GSCEER), an Incremental Clustering Approach for Reducing the Energy Consumption in WSN (AELEACH), and a Meta-heuristic Optimized Cluster head selection-based Routing Algorithm for WSNs (MOCRAW). According to the findings, the proposed OPRCER protocol achieved high energy efficiency and lifetime.