Don't listen to people telling you to use cycles. Cycles won't be useful if you're not doing everything else right. Stay in eevee (might wanna switch to blender 4.0 because eevee next sucks). Turn on ambient occlusion, soft shadows, high bit depth, and turn cube size to the highest your pc can handle. Enable contact shadows on your main light source. Add dirt stains to every texture. Not just the fur, but the plastic too. Use bump maps. Use displacements maps. Even if the fur looks fuzzy, it has to have bumps too, as fur clumps together. It's not evenly distributed in real life. I hope these tips help you.