It really does depend what you want to do, how you want to play. Look at the benefits for each race, check what the Orc gets vs the Dunmer, and then check how DK or NB compares to what you think would be most fun. If you plan to be a heavy PvP player, then you must look at the technical side of each, and how you want to play, which role, etc.

Do whatever spams focused aim the best lol that's the pvp thing I reckon, you know wooden arrows that hit like a bus

Dunmer DK or Altmer nightblade - if magicka build.

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Redguard for high damage stamina build
Bosmer for sustainable damage stamina build

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