How to make a full recovery of my personal account and secure it from happening again

Start here:

If you think your Apple Account has been compromised - Apple Support

For additional information, you will need to provide some more details. There is no such thing as a remote connection to your iPhone, although your Apple Account may be compromised if you inadvertently gave someone your Apple Account Password. With two factor authentication on your account, that would also require the verification code sent to your Trusted Devices or Trusted Phone number previously set up on your account.

With access to your Apple Account, someone can change data that you stored in iCloud and that would sync back to your device where those changes are reflected, but that does not mean someone has access to your device or remotely connected to it.

Read this document if you think your Apple Account has been compromised. --> If you think your Apple Account has been compromised - Apple Support

For iOS 15 or earlier, if you want to see if anyone else has access to your device or accounts, click here --> Checklist 1: Limit device and account access - Apple Support

For iOS 16 or later see how Safety Check on iPhone works to keep you safe. Safety Check for an iPhone with iOS 16 or later - Apple Support

Use the information in this document to check your Apple ID device list to find where you're signed in --> Check your Apple Account device list to find where you’re signed in - Apple Support

Related materials:

Personal Safety User Guide

Personal Safety User Guide - Apple Support

> open the Table of Contents and review the articles

A document with general information about security and your Apple ID --> Security and your Apple Account - Apple Support

Contact Apple for help with Apple ID account security. This page provides country-specific Apple Support contact information ➞ Contact Apple Support - Apple Support