Anyone not really know what's going on the job?

Like I do my tasks in audit and also filling out tax forms but don't get why I do a lot of them.

I roll last years forward and try it but if I had to do one from scratch I would be lost.

The scary part is that no one is really there to teach me. A lot of the things "i don't know" are not things you see on a textbook and more niche to my client etc.

I realize this career is very technical and it sucks.