This study investigates chalcogenide photonic crystal fibres for mid-infrared supercontinuum generation, addressing needs in spectroscopy, sensing, and medical diagnostics while outperforming silica fibres in mid-infrared losses. COMSOL Multiphysics was used to analyze optimal mode area, confinement loss, nonlinear coefficient, and dispersion for two geometries (three-ring and five-ring) with different pitch and air-hole ratios from 0.5 μm to 5 μm resolution. The five-ring PCF provides better confinement, a greater nonlinear coefficient, and reduced loss, but it adds fabrication complexity and affects stability. The three-ring architecture, on the other hand, allows for simpler manufacture, reduced costs, broader dispersion, and improved robustness while maintaining modest performance. Finally, the three-ring chalcogenide PCF emerges as a viable option for cost-effective, scalable mid-infrared supercontinuum generations.