Welcome @
StFleury! I think you'll find several LA users on bike forums, some in this sub-forum (SS/FG) and others in the regional forum:
https://www.bikeforums.net/southern-california/
I am in San Diego myself but I've ridden (fixed) in LA a few times over the years and generally had a good time. Other users may be able to recommend you specific groups and communities around there as well. Cheers!
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"Your beauty is an aeroplane;
so high, my heart cannot bear the strain." -A.C. Jobim, Triste