Does the US Senate need reform?

The two senators from California, Dianne Feinstein and Barbara Boxer represent 38 million people. They have been elected and voted in by millions. The same goes with Texas, where the two senators there represent 26 million people. If all Americans are equal, why does Wyoming which doesn't even have 600,000 residents have as much power in the senate as Texas and California?

Why should senators from smaller states be able to reject the will of a state that has millions more citizens than them? Surely the only answer to this is to either reform the senate or give states more rights?