Q: i want to download some free apps but it dont let me do it cause i have a issue with my payment, i try to remove my debit card and the option didnt appear, i cant choose none for payement, what can i do ?

You need to settle the debt before you can download anything other than podcast episodes from the iTunes Store or select None as the payment option.

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There are normally some hoops you can jump through as you create your iTunes account that workaround the need for a card, otherwise once the account is set up iTunes may still expect you to provide one, which you can subsequently remove. If you don't have or want to use a credit card at this time you can try this method using iTunes on a computer...

1. Enable the menu bar if needed with Ctrl+B (Applies to Windows only)
2. Sign out of the iTunes Store from the Store item on the menu bar
3. Go to iTunes Store home page
4. Go to Quick Links > Redeem
5. Sign in with your Apple ID
6. Go through the screens, accepting the EULA, etc.  You should arrive at a Review Payment screen where one of the options is None - select this and continue. You shouldn't actually need to redeem a new voucher/card.

It is worth noting that one of the functions of the registration is to prove you have a valid billing address in the region whose store you are trying to use.

tt2

Create an iTunes Store, App Store, or iBooks Store account without a credit card or other payment method - Apple Suppor…

Yes, you can create a new account, and the article above explains exactly how to do so without the use of a credit card.

I would suggest you contact iTunes Support though and get rid of the debt on the account so you aren't left with multiple accounts to manage. Until you do, even updates will be unavailable to you for your previously downloaded apps.