Having a totalitarian state as a world superpower is no way better. We already tried that with the Soviet Union, and it failed and was a disaster for everyone involved.
The reason you are not militarily involved overseas is because you are not in a position to project your military power globally yet. You meddle and force your will in many different other ways, far away from your shores. Like Russia, you have troubles with several of your neighboring countries, who with good reasons don't trust you. Actually many hate your guts. Just ask the populations in say Japan, South Korea, Northern India or even Vietnam, who even after fighting a war with the US only a few decades ago, would still prefer being allied to the US than you. Or even look at your own people who don't even trust each other. They even horde goods to bring back home when travelling in western countries because so many things are fake in China. They even buy fucking milk powder in spades when they visit Denmark.
Obviously the US is not all good, but even with the current administration led by an unstable halfwit, it is still a more trustworthy ally than China with it's current regime. How many of your neighbors would you say are your close allies? Exactly, they don't trust or even like you, and with good reason.
And you talked about the British having a better influence on the world than the US? Maybe you should read up on history. In comparison to some of the cruelty and how the British behaved towards some of their colonies, the US are even humanitarians. And on the grand scheme of things, the world has never in it's history had such an increase in prosperity and peace, as it has had during Pax Americana after WW2.
There is no doubt that China will be a superpower in the future, one just have to hope that you will also develop into a more modern and civilized society, that can be a role model for everyone else.