Well, everyone needs new pilots, but out of the most active ones I'd single out Liberty Navy and Colonial Remnant the most.
Others are fairly active as well, for example BAF and RM are active and quality factions as well.
I might be forgetting a few, no, I am most certainly forgetting a few, but other posters will probably get those.
Anyways, you can join multiple ones and slowly see what suits you best, or you can go one by one, maybe you'll get lucky.
Safe flying.
<span style="font-familyalatino Linotype">
<span style="color:#000000">All morons hate it when you call them a moron.