Remind me to slap you with a Swallow.
As I said years ago, “chariot” is a tricky word. Even in Present-Day English it can be confusing. In her wedding-fantasy song “I do”, Ireland’s Andrea Corr sings, “I want an open chariot”, meaning what most Americans would express as “a horse and carriage”. American Jane Austen fans might understand the phrase, but few others.
And then there’s the “Ancient Astronaut” folks who theorize that “flying chariot” is just old timey language for “space ship”, but the ancient peoples lacked the proper language to describe it as such.
Not everyone or everywhere, definitely. Chariot cultures only dominated in (relatively) open areas before development of effective cavalry through horsebreeding and improved weeapons. As it happens, the terrain which both North and West Germans lived was extremely rough, broken by waterways, and frequently heavily wooded. Chariots likely wouldn’t be able to function in much of eastern and northern Europe; they probably couldn’t function in France/Gaul or Britain until the Celts cleared large areas, although IIRC there are more frequent natural clearings in both. Thus it wouldn’t be surprising if the Norse, nor their ancestors, ever used the chariot.
That said, one might suggest that the chariot-using Aryan conquerers of India could have been related, so that its possible there was an ancient connection there.