Death Script: Don't Respawn automatically. Press button to respawn. Can I get help?

Hello! I am attempting to make an RP game for my Roleplay community and want to make a script we would refer to as a Death Script. Basically when you die you will go into a ragdoll then if you press 'R' it will respawn and 'E' will revive (Spawn you where you died). Please could I get help if it is possible. I have a ragdoll script when you die but I would prefer it to be in the same script. So far I have:

local mouse = game.Players.LocalPlayer:GetMouse()

game.Players.CharacterAutoLoads = false

game.Players.PlayerAdded:connect(function(player)
    player.CharacterAdded:connect(function(character)
        local humanoid = character:FindFirstChild("Humanoid")
        if humanoid then
            humanoid.Died:connect(function()
                mouse.KeyDown:connect(function(key)
                    key = string.lower(key)
                    if string.byte(key) == "r" then
                        player.LoadCharacter()
                    end
                end)
            end)
        end
    end)
    player.LoadCharacter()
end)

The script I started with was one I found on the Wiki which delays the respawn.

local respawnDelay = 5

game.Players.CharacterAutoLoads = false

game.Players.PlayerAdded:connect(function(player)
    player.CharacterAdded:connect(function(character)
        -- find the humanoid, and detect when it dies
        local humanoid = character:FindFirstChild("Humanoid")
        if humanoid then
            humanoid.Died:connect(function()
                wait(respawnDelay)
                player:LoadCharacter()
            end)
        end
    end)
    player:LoadCharacter() -- load the character for the first time
end)

The problem with the edited script I am having is it respawns you after 5 seconds automatically. I also dont have a revive in it yet.

Many Thanks. Ethan