how will they get back
the newsreaders keep saying to latest burn takes them out of earths gravity

makes you wonder how the moon stays in orbit

>>16944282
They are on a free return trajectory so even if the engines fail they will return to Earth just by how the orbits work. It's like a figure 8 around the Earth and Moon. That's just for this mission though. When actually landing there they will need to actually enter a stable Lunar orbit then after light up the engines to leave orbit and fire them back at Earth again. That will be using the engines on the ESM (European Service Module) which was successfully tested on Artemis 1.