Erosion has erased most evidence. The tail always points away from the Sun because of the Solar Wind. We can see a few per night on average. This is caused by friction heating the air molecules in Earth's atmosphere. The air molecules are put into an excited state and release that energy in the form of visible light as they relax to ground state.
Meteors break up into smaller and smaller chunks in Earth's gravity.
If a small chunk makes it through our atmosphere, it is called a meteorite. Release their very high amount of kinetic energy in the form of damage, heat, noise. No crater because meteor exploded before it hit ground. Meteorites have been studied for composition and age. Most orbits are very circular with exceptions of Mercury and Pluto.