CO2 hydrogenation to light olefins is key for reducing environmental emissions and creating sustainable energy. Bifunctional oxide–zeolite (OX–ZEO) catalysts are widely used in this area. Metal oxides, crucial for CO2 adsorption and H2 dissociation, need careful selection and optimization. This paper presents a bifunctional catalyst where Ga2O3 is loaded onto mZrO2 (monoclinic zirconia) (Ga2O3-mZrO2) using citric acid complex method and combined with SAPO-34. Our study demonstrates that the loading method can significantly improve the adsorption capacity of the catalyst for CO2 and had demonstrated impressive catalytic performance compared to common preparation methods. Further, Ga2O3-mZrO2, in comparison to Ga2O3 loaded onto tZrO2 (tetragonal zirconia) (Ga2O3-tZrO2), has a stronger ability to produce light olefins. The catalyst achieves 84.1% selectivity for C2=–C4=, 20.2% CO2 conversion, and 45.3% CO selectivity, remaining stable over 100 hours. This offers a novel method for designing highly active Zr-based oxides for effective CO2 conversion.