So does smoking weed kill your brain cells or not?

You hear it does in one study, then you hear it doesn’t in another. So is there an unbiased study we can look at? DOES IT OR DOESN’T IT? It seems simple enough. I’m sure it’s more complex but maybe someone could explain it to me a little better? Is it that smoking weed does kill brain cells, but we have SO MANY BRAIN CELLS and we use a small percentage of them that it usually isn’t killing off any crucial brain cells? Oh god I have no idea, anybody know? Anything? huhh? huh?