I have a similar tale to tell: it was new year 2001, couldn't resist a first ride on my new road bike, in the snow. Fine for miles, then went down like a sack of sprite on "black" ice... First thoughts? Not my road rash or bruises, but the condition of the bike!
It happens, I'm sorry. It sounds as if you need a minor "tune up" to readjust the derailleurs, but nothing serious.
Good luck,
Ed
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Get a bicycle. You will certainly not regret it, if you live.