I can’t download stuff on my phone,because it’s says my Apple ID is been disabled

If your Apple ID is locked or disabled - https://support.apple.com/HT204106 - "If you or someone else enters your password, security questions, or other account information incorrectly too many times, your Apple ID automatically locks to protect your security and you can't sign in to any Apple services. You can unlock your Apple ID after you verify your identity."

https://iforgot.apple.com/password/verify/appleid - "You’ve come to the right place to reset a forgotten password, unlock your account, or recover an Apple ID. "

What to do after [or before] you change your Apple ID email address or password - https://support.apple.com/HT204071 - "After you change your Apple ID email address or password, you might need to update your sign-in information with any Apple services you're using." - Or if you're seeing persistent disabled messages or repeated requests for the password to your previous Apple ID.

If you cannot resolve it yourself:

Contact Apple for help with Apple ID account security - https://support.apple.com/HT204169

More unusually an account may be disabled because you owe money on a purchase and have stopped payment through a card. --> iTunes - Official Apple Support - https://support.apple.com/itunes

Your Apple ID account becomes disabled for one of two reasons. Either

1) You tried to enter the wrong password or wrong security answers too many times - in this case, head over to https://iforgot.apple.com to get started toward recovering your account

or

2) You owe the iTunes Store money or there is a problem with your iTunes account - in this case, head over to iTunes - Official Apple Support for assistance