Why should "states" pick the President? Why not the people regardless of in which state they live in? Of course bigger states should have more say because they are bigger. Popular vote should matter and if popular votes are against Republicans then maybe Republicans should re-think their political agenda to get more votes in blue states. Biden got about 7 million (!) votes more than Trump. Of course he should be the president in democracy.
Well yeah, as you and I outsiders see it that as democratic that it ought to be one-person-one vote for the POTUS. But that was far from way the "founding fathers" saw it in the late 1780s.
And the reason the FFs saw it as they did is, maybe ironically, a hangover from the colonial era. We should understand that the 13 colonies were all founded separately with separate charters and separate colonial assemblies. Though the details differed, each colony was largely self-governing in all local matters. In fact the colonies resented it when the British Parliament finally decided to exert a little "central" imperial control by collecting some new taxes; (never mind that that Parliament wanted the taxes to pay for the defense of the colonies against the French in the Seven Years' War, a.k.a. French & Indian War). This resentment against the new Parliamentary initiative was the impetus for the war of independence, (sometimes imprecisely called the "American Revolution").
When that war was won, (with the indispensable support of France), the power-that-were, (
i.e. wealthy local elites), within the colonies
cum states were unwilling give up the prerogatives they enjoyed under the largely unregulated colonial system to a new, United States federal government. That's the reason the US Constitution is the way it is.