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If you have been married for less than two years, you can get a KITAS, but that will not allow work.
For work, you will need an IMTA, but you must have skills that aren't available from an Indonesian.
Many run a business in their wife's name but keep their heads down.

I cannot understand mean if 2 year I married what's different and my head. Down

After two years you can apply for a KITAP.
There is some debate as to the requirement for a work permit for KITAP holders, but safety suggests getting one if you intend to work formally.

"Keeping your head down" means staying out of sight if you run a business in your wife's name.
Everyone knows you're doing it, but nothing will happen if you don't upset anyone and don't shout about it.