1) So…”dinosaurs were all fake, except for those big dinosaur-y ones; those were totally real.” There seems to be a disconnect in your thinking process, Benjy.
2) Chicxulub is underwater, Benjy. The crater is off the coast of Mexico. Now, maybe it wasn't underwater at the time of impact, but humans didn't go poking around grand prehistoric cataclysms until well after the waters came rushing in, so…yeah, that's probably why we've not found whatever magical crystals you think should be there.
3) Asteroids and meteorites do hit the Earth several times every day, but thanks to that big blanket of breathable air and magnetism surrounding our planet, which cwe seem hell-bent on killing, they usually get reduced to dust before they touchdown.
4) Mammoths and dinosaurs did not co-exist. Mammoths were about the size, and shape, of mice at the time, just like most mammals.
5) Either stop drinking Clorox and let your brain recover from the damage you're doing to it, or drink more Clorox and spare us the continued inanity that is your existence, please.