The Mog Bonanza Homecoming Comes Rolling into Vana'diel!

Aby is not closed to new players at all.
You should take a closer look at the details. There are really good wiki pages and threads with abyssea details. There are also many experienced players who will answer questions. You could even grind vw in pugs instead of Abby Sea for cruor to brew with.

You can often get the best atma for free if you just ask the groups which are doing the ones you want. It only takes a small collection of good atma to solo a huge amount of abyssea.

Sounds to me like you just are not trying.