How do you get a script to work on everyone who joins a game?

So this script seems to only work for the first person to join a game.

For example:

If I joined the game first it'll give me the group uniform but anyone else who joins the game after me won't get their group uniform.

But I got a friend to join first and it gave him his group uniform but when I joined after him it didn't give me my group uniform this time.

So I am just wondering how I can get the script to work for every player that joins the game every time.

And I've tried loads of different things to try and make it work but nothing, I'm not the strongest with lua :/

local GroupId = 4217419

game.Players.PlayerAdded:Connect(function(plr)
if plr:GetRankInGroup(GroupId) == 246 then
game.Workspace[plr.Name]:WaitForChild("Shirt").ShirtTemplate = "rbxassetid://2165624791"
game.Workspace[plr.Name]:WaitForChild("Pants").PantsTemplate = "rbxassetid://2165669286"
end

if plr:GetRankInGroup(GroupId) == 247 then
game.Workspace[plr.Name]:WaitForChild("Shirt").ShirtTemplate = "rbxassetid://2165624791"
game.Workspace[plr.Name]:WaitForChild("Pants").PantsTemplate = "rbxassetid://2165669286"
end

if plr:GetRankInGroup(GroupId) == 248 then
game.Workspace[plr.Name]:WaitForChild("Shirt").ShirtTemplate = "rbxassetid://2165624316"
game.Workspace[plr.Name]:WaitForChild("Pants").PantsTemplate = "rbxassetid://2165669286"
end

if plr:GetRankInGroup(GroupId) == 249 then
game.Workspace[plr.Name]:WaitForChild("Shirt").ShirtTemplate = "rbxassetid://2165624316"
game.Workspace[plr.Name]:WaitForChild("Pants").PantsTemplate = "rbxassetid://2165669286"
end

if plr:GetRankInGroup(GroupId) == 250 then
game.Workspace[plr.Name]:WaitForChild("Shirt").ShirtTemplate = "rbxassetid://2165632105"
game.Workspace[plr.Name]:WaitForChild("Pants").PantsTemplate = "rbxassetid://2165673300"
end

if plr:GetRankInGroup(GroupId) >= 251 then
game.Workspace[plr.Name]:WaitForChild("Shirt").ShirtTemplate = "rbxassetid://2165667431"
game.Workspace[plr.Name]:WaitForChild("Pants").PantsTemplate = "rbxassetid://2165669286"
        end
end)