We studied the transverse oscillations in hot coronal loops of an active region NOAA 12673 located at the west limb. Loop oscillations were associated with a plasmoid ejection from the same area. During the rising phase of the plasmoid, a magnetic flux tube was seen to be rising and bending towards the loop system that erupted before the plasmoid ejection. In addition to the plasmoid ejection, a large coronal mass ejection (CME) and a X8.2 flare was observed in the same active region for several hours (~7 hours). A follow-up shock wave from the flare site after the plasmoid ejection was possibly triggered by sudden momentum transfer towards the solar disc. It was found to be propagating across the entire solar disc with an average speed of ~1290 km s-1. The combined effects of the erupting flux tube, plasmoid ejection and the shock wave perturbed the loops from their equilibrium and set them in oscillations. We found different oscillations of fundamental mode in loops, fast decaying (with a period of 7.20 minutes and a damping time of ~16.00 minutes) and slow decaying (with a period of ~5.75 minutes and a damping time of ~30.78 minutes). The two different oscillations could be due to different loop lengths and plasma densities. These loops were found to be oscillating with a phase difference of ~33 degrees. This could be due to varying times of their excitation, possibly caused by the flux tube's eruption and the plasmoid ejection.