How would someone calculate how many matches you've played?

So we track hours, but is there some equavalent to how many matches we’ve been in?

I mean, you could time how long your matches take for say, a week. Find the average by adding all match times and dividing by the total number of matches.
Now divide your hours played by that average match time, and then you’ve got your answer.

Fortunately the hours tracked are only for actual play time in a match. Lingering in lobbies, in the menu or opening crates do not count as game hours. So yeah, divide the amount of minutes you have played by the average length of your matches and you get how many matches you have played.

Though, I would say, it wouldn’t be accurate at all, as the game balance have changed so much since 3 years ago that matches now last on average 3 minutes or less. When the game was launched I would say matches usually lasted about 8-12 minutes.