Why was the Roman republican government unable to maintain order in the state?

The state structure of the Roman Republic is, on the one hand, the standard of state structure of its time, but at the same time there were moments that led to the collapse of the republican model of government in the state. There are two main problems that the Roman Senate could not cope with. The first problem is the fragmentation of the elites of the state and the concentration of large funds from families that were not included in the Senate or were not satisfied with their position in the state. The second problem was the non-settlement of the conflict between plebeians and patricians.