Meanwhile you can learn English from watching Star Trek, Time Team, SpongeBob, reading Harry Potter, The Hobbit, shitposting on Reddit, etc.
For better or worse, English already is the de-facto universal language, or the closest we have to it. We tried the Esperanto thing back in the 20s, and it didn't really work out as there was very little interest outside of a fairly sizeable but ultimately limited group of enthusiasts. I don't see how Esperanto or any other constructed language will take off in the foreseeable future.
Continued evolution of English pronunciation and spelling seems like a more realistic and better option – the language will change anyway, as all languages do, so might as well ensure it changes in a reasonable direction. Time spent advocating Esperanto is probably better spent on advocating more consistent English.