You're on the right track but the solution isn't electoral reform for government, but the revolutionary reorganization of society to disempower the class of people who own and use capital goods (i.e, means of production, distribution, livelihood, and property) for private profit and shift power towards labor and the state. To shift production for profit value and instead to use value, dismantling the incentive and social structure for overproduction, excess waste, and false scarcity.

As you've detected, Biden isn't doing this just on his own whim but because the state and political economy require him to; the state under the control of a socialist party backed by a revolutionary working movement and class will see those pressures dismantled and obliterated. Conversely, Biden's behavior isn't predetermined either. He does have the power to maneuver against these wars, and there is possibility to ameliorate and restore a 2021 status quo for both Ukraine and Israel-Palestine, without weakening the US's position, but Biden has chosen not to.

The solution isn't fairer distribution of the loot or more parliamentary democratic reforms.

Vulgar materialism.

The system selects people like Biden, but that doesn't mean it isn't also his fault.

Taking power in a system that empowers horrible people doesn't make him any less horrible