This study examines the behavior of hybrid networks formed by amyloid fibrils and nanocellulose using coarse-grained simulations. By focusing on the role of electrostatic interactions, we investigate how these oppositely charged polyelectrolytes assemble and evolve structurally. The findings show that their rheological properties, particularly the storage modulus exponent, align with previous experiments and theoretical predictions. This agreement highlights the potential of amyloid fibrils and nanocellulose for developing advanced materials with tailored properties. The results also provide insight into how these networks can be controlled for different applications. By connecting molecular-scale dynamics to material performance, this work contributes to the broader effort of designing functional materials that combine the biological properties of amyloid fibrils with the mechanical characteristics of nanocellulose.