How can you help me about my situation

By hack, if you mean remotely controlling or monitoring your device, then...

Keep the iPhone updated to the latest iOS always and never Jailbreak. That's it.

iOS / iPadOS devices cannot be hacked or infected with Virus / Malware / Spyware if it is updated to the latest iOS/iPadOS unless you have intentionally downloaded spurious software or unauthorized apps directly from the internet and installed them on your device or/and have Jailbroken. 

It (Hacking) also depends on how careful are you in sharing sensitive and valuable information pertaining to your iPhone such as Passcode, Password, etc with your friends and family members.

Be careful when sharing the device's sensitive and valuable information with friends and family members.

Thumb Rules:

1. Enable  Guided Access before handing over an iPhone to kids
2. Don't share Apple IDs
3. Don't Jailbreak
4. Don't share sensitive information pertaining to your device and payment methods
5. Beware of Phishing

Kawaii09 Sais:

"How can you help me about my situation : my iphone trying to hack any information about my privacy , trying to get my money in my account"

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About a Hacked iPhone:

What makes you say this? The only way for an iPhone to be hacked is if it is jailbroken. So, who is the seller? If purchased form Apple or an AASP (Apple Authorized Service Provider), then no worries there. If purchased elsewhere, then that might be a bit concerning in this case.

Restore your iPhone or Reset it:

If you are so concerned, then restore from a backup or reset your iPhone to factory settings. Important: Back Up First: Be sure create a back up your iPhone prior to performing an update, that way you have something to restore your iPhone from, should anything go wrong afterwards. 

A. Restore from a Backup:

Did your ever back up your iPhone with these installed? If so, back up you could back up your iPhone, and then restore it from the backup.

or...

B. Resetting to Factory Settings:

Go here: What to do Before you Sell, Give Away, or Trade in your iPhone, iPad, or iPod touch - Apple Support