a sure fire way to meet them is YouTube conventions like Vidcon (most get to meet and take a pic with them) or Playlist live. Although sometimes people meet them out and about on the street. (being an American makes this hard to meet Brits) anyway, I would just prepare to stay really updated on Dan and Phil and their locations (rn Phil is in Florida for example)

and I know how you feel. the only reason I'm alive is for my friends and family (online or offline) and to meet Dan and Phil one day.