I don't remember how the movie handled how they were introduced. This movie was of course rushed to production. So they were going on news reports that came out after the engagement interview in which the real Harry & Meghan revealed that it was a female mutual friend whom they wouldn't name, who had introduced them.
In fact, Violet Westenholz, in an article I read was quoted as discreetly saying, "Others were involved," so she did not take full credit. But clearly it can't be confirmed that Violet admitted anything. Misha Nonoo has also been extremely discreet and noncommittal. It may have been Misha who introduced Violet to Meghan. Misha is a very loyal and close friend of Meghan's and she was formerly married to a school friend of Harry's and William's. I believe that Meghan met Misha through Markus Anderson. And she may have met Markus through Jessica Mulroney. That's all unconfirmed speculation. I also personally feel/ speculate that Misha and Violet collaborated on getting Meghan and Harry to meet.
For the movie, at least they knew it wasn't Markus who did the matchmaking, since M&H had mentioned a female friend. In the beginning, tabloids had suspected Markus Anderson, but he'd only arranged the location where they met: Soho House. None of that was particularly dramatized in the movie. There was no mention or depiction of Markus at all. He's an extremely close, loyal and discreet friend of Meghan's. From what I've read and seen on Meghan's former Instagram, Markus is like an older brother to Meghan. But there was no time nor need to depict him in the movie.
I've been meaning to comment on the movie. But it was rather underwhelming for me when I saw it. I expected it to be a bit corny and inaccurate. I do agree that the acting was pretty good from the leads. The actress who played Kate was very physically similar, but Kate and William I do not think are that close to the way they were depicted. William does have a dry sense of humor, but he's probably a lot more loose and fun-loving privately than how he was characterized in the film. I doubt Kate is the way she was depicted in private either. Kate strikes me as being very proper and guarded in public, but she also seems to have a cheeky sense of humor and a delightful graciousness which was not captured by this characterization.
The lead actors were very close in facial resemblance to M&H. However, the actress (Parisa Fitz-Henley) who portrayed Meghan is taller than Meghan. In fact, I think they had to do a bit of sleight-of-hand in the film since Murray Fraser (who played Harry) is rather slim of build and about as tall as Parisa, whereas Harry is much taller than Meghan. Fraser does have a good facial resemblance to Harry (they died his brown hair red), and his voice is spot-on in depicting the way Harry sounds. But Fraser obviously is good at voice training because his real speaking voice is heavily Scottish. While the real Harry is tall and slim, he has a larger overall frame than the actor Murray Fraser.