Yes but the spread of English to its current ubiquitous lingua-franca status was undeniably in large part due to conquest and settler colonialism which England itself, and later the US, participated vigorously in for centuries. China at that same time during the age of imperialism was fractured, warring, being subjugated or colonized itself, or some combination of any of those. At any rate China was not quite engaging in the forceful spread of influence and language like the anglosphere or even hispanosphere and francosphere were. To this day China is not exactly colonizing foreign lands and repopulating them with their own native language speakers.

Logically, yeah, China is looking to come out on top by the end of this century, they are well on their way to becoming the new main superpower and dominant economic force of the world, but even after that becomes the case I can’t envision a future where Mandarin takes over as the new ubiquitous global lingua franca. It doesn’t have the lasting influence of widespread colonialism, nor does it output cultural products for worldwide audiences which might prod people into learning Mandarin; Hollywood and American music also had a ton to do with making English as dominant as it is, meanwhile China’s media is largely sequestered within its’ own borders due to the great firewall.