what does the circled bit do?

[tardy bone]

wdym

players is an table that haves all the player with a numeric index

like

[1] = Player1;
[2] = Player2;

and you're doing for i = 1 (starting for index 1), #players (the length of the table), and that just is checking if the character is nil

and getChildren is bad written, is GetChildren

[wet ferry]

true

[tardy bone]

and the service "Players" has :GetPlayers

[wet ferry]

even truer

[polar imp]

Also getChildren() should be capital: GetChildren()

I would suggest doing a foreach loop here tho

For _, plr in players do ... end

[static owl]

game.players:getchildren/getplayers returns an array of children or in this case just players

and u can use indexs in tables to get the key in that spot

for example

local array = {"a","b"}
print(array[1]) --prints a

so players[i] would be one of the players