Practically identical key bind scripts not working?

I am making a game which involves key binds. I have four scripts located in player scripts which each do different key binds: Sprint is double tapping "w", glide is double taping space, super jump is holding and releasing "t", and night vision is holding "q". All these scripts should work the same, and they do... in studio, but once you enter the game, things start getting weird.

MY SCRIPTS:

Sprint:

local player = game.Players.LocalPlayer
repeat wait() until player.Character.Humanoid
local humanoid = player.Character.Humanoid
local mouse = player:GetMouse()
local max = 10
local stamina = 30
local canrun = false
local runing = false
mouse.KeyDown:connect(function(key)
    if key == "w" then --Select a button, if you want shift then put 48 in it
        if canrun and stamina > max/3 then
            wait(0.1)

            humanoid.WalkSpeed = 30
            canrun = false
            runing = true
        else
            wait(0.1)

         canrun = true

        wait (0.5) canrun = false
        end
    end
end)

mouse.KeyUp:connect(function(key)
    if key =="w" then

        humanoid.WalkSpeed = 16
        runing = false
    end

end)

while true do wait(1)
    if runing then 
        stamina = stamina - 1
        if stamina < 0 then 
            humanoid.WalkSpeed = 16
            runing = false
            stamina = 0
        end

    end
    if runing == false then
        stamina = stamina + 1
        if stamina > max then 
            stamina = max
        end
    end
end

this script acts strange:

Glide:

local player = game.Players.LocalPlayer
repeat wait() until player.Character.Humanoid
local humanoid = player.Character.Humanoid
local mouse = player:GetMouse()
local max = 50
local stamina = 50
local canrun = false
local runing = false
mouse.KeyDown:connect(function(key)
    if key == " " then --Select a button, if you want shift then put 48 in it
        if canrun and stamina > max/3 then
            wait(0.1)
            print ("running") 
            canrun = false
            runing = true
        else
            wait(0.1)
            print ("moving")
        canrun = true

        wait (0.5) canrun = false
        end
    end
end)

mouse.KeyUp:connect(function(key)
    if key ==" " then
        print ("walking")
        runing = false
    end

end)

while true do wait(0.05)
    if runing then 
        print (stamina)
        stamina = stamina - 1
        power = stamina
        if power > 25 then
            else power = power*2
        end
        humanoid.Parent.Head.Velocity = humanoid.Parent.Head.Velocity * Vector3.new(1,0,1)
        if stamina < 0 then 
            runing = false
            stamina = 0
        end

    end
    if runing == false then
        stamina = stamina + 1
        if stamina > max then 
            stamina = max
        end
    end
end

this script acts strange as well:

Super Jump:

local player = game.Players.LocalPlayer
repeat wait() until player.Character.Humanoid
local humanoid = player.Character.Humanoid
local mouse = player:GetMouse()
local max = 5
local stamina = 30
local charge = false
local power = 0
mouse.KeyDown:connect(function(key) 
if key == "t" then --Select a button, if yo u want shift then put 48 in it
        wait(0.1)   
        print ("charging")

         charge = true
    end
end)

mouse.KeyUp:connect(function(key)
    if key =="t" then
        print ("walking")
        humanoid.Sit = false
        wait(0.2)   
        humanoid.JumpPower = power*20
        power = 0
        humanoid.Jump = true
    charge = false
    wait(1)
    humanoid.JumpPower = 50
    humanoid.WalkSpeed = 16

    end

end)

while true do wait(1)
    if charge then 
        humanoid.Sit = true
        humanoid.WalkSpeed = 0
        humanoid.JumpPower = 0
            stamina = stamina - 1
        power = power + 2
    print (power)
            if stamina < 0 then 
            humanoid.Sit = false
            wait(0.2)
            humanoid.JumpPower = 20*power
            power = 0
            stamina = 0
            humanoid.Jump = true
            charge = false
            wait(1)
            humanoid.JumpPower = 50
            humanoid.WalkSpeed = 16

        end

    end
    if charge == false then
        stamina = stamina + 1
        if stamina > max then 
            stamina = max
        end
    end
end

Final Script, this one appears to work fine:

Night Vision: (for seeing in caves, the only script which only modifies local things, the shortest script)

local player = game.Players.LocalPlayer
repeat wait() until player.Character.Humanoid
local humanoid = player.Character.Humanoid
local mouse = player:GetMouse()
local max = 10
local stamina = 30
local canrun = true
local runing = false
mouse.KeyDown:connect(function(key)
    if key == "q" then --Select a button, if you want shift then put 48 in it
        if stamina > max/3 and canrun then
            print ("on") 
            game.Lighting.GlobalShadows = false
            canrun = false
            runing = true


        end
    end
end)

mouse.KeyUp:connect(function(key)
    if key =="q" and runing then
        print ("off")
        canrun = true
        game.Lighting.GlobalShadows = true
        runing = false
    end

end)

Observations on how scrips behave: all scripts run normally when only one player is in game

when two players join the game both players start with most scripts running normally (I have had it to where one player's glide script appears to be broken)

once a player dies or resets, he usually re spawns with only night vision working. The next player who dies usually has the key binds working from then on it appears to be random, usually all key binds working or only night vision, which consistently works just fine.

I am REALLY confused. I have absolutely no idea why this happens or how to fix it. All four of these scripts are located in starter player scripts. there are no errors in studio

please help!