What was the weakness of royal power in France in the 9-11 centuries?

Let us recall that feudal fragmentation flourished during these years. Feudal fragmentation is a period of weakening of the central power in feudal states due to decentralization, different in duration and effect, due to the strengthening of large feudal lords in the conditions of the seignorial organization of labor and military service. In France in these centuries feudal fragmentation took place. The king could not create new laws, collect taxes from its population. There is no power, which means there are no troops and allies.