Battle Royale seems like a great beginner friendly mode but the very few explanations that you get before starting a game are anything but that. Players shouldn't be forced to google or click on "Support" and then "How do the game modes work?" to find a video tutorial.

For instance, things I consider very important and which I would add (maybe create a link to "detailed rules" or something like that) are:

Battle Royale Distance:

That you can recover used guesses and how exactly you can do so

What the distance numbers in the ranking mean

Battle Royale Countries:

That speed can matter but not within the first 15 seconds and in round 1

That - unlike in Battle Royale Distance - you don't lose guesses between rounds