Can someone help me understand why this isn't working? Big juicy monkey brain no work right

I have a character ability system that works for the most part, however, for some reason I can't get my head around, this won't work. The RemoteEvent I have set up is only supposed to execute once, and then check that the ability that it's linked to is disabled, yet after the first time it completely breaks, especially if you spam it. Obviously hints towards something not being reset properly, but it is? Idk but here's the code:

-----------------------
-- General Variables --
-----------------------

local player = game:GetService("Players"):WaitForChild(script.Parent.Name)
local character = workspace:WaitForChild(player.Name)
local humanoid = character:WaitForChild("Humanoid")

local RunService = game:GetService("RunService")
local ServerStorage = game:GetService("ServerStorage")

local Events = game:GetService("ReplicatedStorage").RemoteEventsAndFunctions

local SetHUDProgressBar = Events.SetHUDProgressBar

local AbilityEvents = Events.Abilities

local disableActions = script.DisableActions

local ability1 = script.Ability1
local ability2 = script.Ability2
local ability3 = script.Ability3
local abilitySlots = {ability1, ability2, ability3}

local activateAbility1Cooldown = false
local activateAbility2Cooldown = false
local activateAbility3Cooldown = false
local ability1Cooldown = 0
local ability2Cooldown = 0
local ability3Cooldown = 0
local ability1Disabled = false
local ability2Disabled = false
local ability3Disabled = false

----------------------------------
-- Character specific variables --
----------------------------------

local SlamEvent = AbilityEvents.Slam
local ChargeEvent = AbilityEvents.Charge
local PunchEvent = AbilityEvents.Punch

local slamFolder = script.BruteMoveset.Slam
local slamAttackTime = slamFolder.AttackTime.Value
local slamRecoveryTime = slamFolder.RecoveryTime.Value

local slamAnim = slamFolder.Animations.Slam
local slamRecovery = slamFolder.Animations.SlamRecovery
local slamAnimTrack = humanoid:LoadAnimation(slamAnim)
local slamAnimRecoveryTrack = humanoid:LoadAnimation(slamRecovery)

--------------------
-- Base functions --
--------------------

local function GetAbilitySlot(abilityFolder)
    for i, v in ipairs(abilitySlots) do
        if v.Value == abilityFolder then
            return i
        else
            return -1
        end
    end
end

local function ActivateCooldown(slotIndex)
    if slotIndex == 0 then
        ability1Cooldown = abilitySlots[0].Value.Cooldown.Value
        activateAbility1Cooldown = true
    elseif slotIndex == 1 then
        ability2Cooldown = abilitySlots[1].Value.Cooldown.Value
        activateAbility2Cooldown = true
    elseif slotIndex == 2 then
        ability3Cooldown = abilitySlots[2].Value.Cooldown.Value
        activateAbility3Cooldown = true
    end
end

local function GetAbilityDisabled(slotIndex)
    if slotIndex == 0 then
        return ability1Disabled
    elseif slotIndex == 1 then
        return ability2Disabled
    elseif slotIndex == 2 then
        return ability3Disabled
    end
end

local function SetAbilityDisabled(slotIndex, value)
    if slotIndex == 0 then
        ability1Disabled = value
    elseif slotIndex == 1 then
        ability2Disabled = value
    elseif slotIndex == 2 then
        ability3Disabled = value
    end
end

local function SpawnAOE(size, cframe)
    local newAOE = ServerStorage.GameplayObjects.DestructiveAOE:Clone()
    newAOE.Instigator.Value = player.Character
    newAOE.Size = Vector3.new(size, size, size)
    newAOE.Parent = workspace
    newAOE.CFrame = cframe
    newAOE.BreakWelds.Disabled = false
end

----------------------------------
-- Character specific functions --
----------------------------------

SlamEvent.OnServerEvent:Connect(function(_player)
    local slotIndex = GetAbilitySlot(slamFolder)
    local abilityDisabled = GetAbilityDisabled(slotIndex)

    if _player == player and slotIndex ~= -1 and abilityDisabled == false then
        SetAbilityDisabled(slotIndex, true)
        disableActions.Value = true

        SetHUDProgressBar:FireClient(_player, slotIndex, 1, false, 0)

        slamAnimTrack:Play()
        slamAnimTrack:AdjustSpeed(1/slamAttackTime - (1/slamAttackTime) * 0.2)

        slamAnimTrack:GetMarkerReachedSignal("AboutToSlam"):Connect(function(stringParam)
            slamAnimTrack:AdjustSpeed(1)
        end)

        slamAnimTrack.Stopped:Connect(function()
            SpawnAOE(slamFolder.AOESize.Value, character.HumanoidRootPart.CFrame * CFrame.new(0,-9,-10))
            slamAnimRecoveryTrack:Play()
            slamAnimRecoveryTrack:AdjustSpeed(1/slamRecoveryTime)

            slamAnimRecoveryTrack.Stopped:Connect(function()
                disableActions.Value = false
                ActivateCooldown(slotIndex)
                SetHUDProgressBar:FireClient(_player, slotIndex, 0, true, abilitySlots[slotIndex].Value.Cooldown.Value)
            end)
        end)
    end
end)

RunService.Stepped:Connect(function(_time, step)
    if activateAbility1Cooldown == true and ability1Disabled == true then
        ability1Cooldown = ability1Cooldown - step

        if ability1Cooldown <= 0 then
            activateAbility1Cooldown = false
            ability1Disabled = false
        end
    end

    if activateAbility2Cooldown == true and ability2Disabled == true then
        ability2Cooldown = ability2Cooldown - step

        if ability2Cooldown <= 0 then
            activateAbility2Cooldown = false
            ability2Disabled = false
        end
    end

    if activateAbility3Cooldown == true and ability3Disabled == true then
        ability3Cooldown = ability3Cooldown - step

        if ability3Cooldown <= 0 then
            activateAbility3Cooldown = false
            ability3Disabled = false
        end
    end
end)