[HELP] Get closest player in vehicle

I want to get the ID or name of the closest player to the player executing the event. How do I get this? I currently have;
client.lua

    while true do
        Citizen.Wait(0)
        local ped = GetPlayerPed(-1)
        if IsPedInAnyVehicle(ped, false) then
            local vehicle = GetVehiclePedIsIn(ped, false)
            TriggerServerEvent("cartag:checkTagged")
        end
    end
end)

It then triggers the serverevent:

-- Checks if player is tagged
AddEventHandler("cartag:checkTagged", function()
    local ped = source
    if tableIndex(tag, ped) then
        local indexNr = tableIndex(tag, ped)
        if tag[indexNr].tagged then
            TriggerClientEvent("cartag:playerIt", ped)
        end
    end
end)

And then goed back to the client event:

-- When player is it
AddEventHandler("cartag:playerIt", function()
    local ped = GetPlayerPed(-1)
    local vehicle = GetVehiclePedIsIn(ped, false)
    local t, distance = GetClosestPlayer()
    if IsPedInAnyVehicle(t, false) then
        if HasEntityCollidedWithAnything(vehicle) then
            local dis = Vdist(coords.x, coords.y, coords.z, coordsFront.x, coordsFront.y, coordsFront.z)
            if dis <= 1.2 then
                -- Trigger tag event
                TriggerServerEvent("cartag:tag", closestPlayerId)
            end
        end
    end
end)

The GetClosestPlayer looks like this:

    local players = GetPlayers()
    local closestDistance = -1
    local closestPlayer = -1
    local ped = GetPlayerPed(-1)
    local coords = GetEntityCoords(ped)
    
    for i, v in ipairs(players) do
        local target = GetPlayerPed(v)
        if (target ~= ped) then
            local targetCoords = GetEntityCoords(GetPlayerPed(v))
            local distance = Vdist(targetCoords.x, targetCoords.y, targetCoords.z, coords.x, coords.y, coords.z)
            if (closestDistance == -1 or closestDistance > distance) then
                closestPlayer = v
                closestDistance = distance
            end
        end
    end
    return closestPlayer, closestDistance
end

This also calls upon:

    local players = {}
    for _, player in ipairs(GetActivePlayers()) do
        local ped_ = GetPlayerPed(player)
        table.insert(players, ped_)
    end
    return players
end

Somehow this always gives a random number when testing, with the distance pointing towards a spawn point under the map, in the northern part of the city.

So; How do I check who the closest player is, how far this player is and if that player is in a car?
Thanks in advance!
(Tried things from other topics, but they didn’t seem to work)
Note: I don’t want to use ESX, want to make the script stand alone. (It’s a tag game script for cars… sounds weird, don’t blame me x) )