Spawn point glitched

So when I use the roblox spawn right its glitched and this is how…
I put the spawn point in the building but every time randomly you might spawn on the roof and I have like 21 spawns in the building and also I was testing it alone so there were no players what is the problem.

If there is something (like BaseParts) above the SpawnLocation, the player will spawn on it (in this case, the roof)

Another way you could do it is by this:

local Spawns = workspace.Spawns:GetChildren()

        local RandomSpawn = Spawns[math.random(1, #Spawns)]
        local HRP = Character:WaitForChild("HumanoidRootPart")

        HRP.Position = RandomSpawn.Position