Phone Stuck in Child Mode

Hello,

I have a Doogee phone that runs on Android.

I was using the calculator when everything froze. I couldn't continue using it, nor exit the app. So I restarted the phone.

And upon restarting, I found myself with a home screen I had never seen before: a simplified desktop with very few icons.

At the top right, I see the Airplane Mode symbol. And at the top left, a small symbol representing a child's head.

At the bottom of the desktop, there is a black cross on the right with "Exit" written and on the bottom left, the symbol of a gear with "Settings" written.

When I click on "Exit" or "Settings," a small window asks me: "Exit child mode": Cancel or Exit. I tap on "Exit."

There, I have a page that says: "Please enter the password in child mode."

And below, 6 dashes indicating that I must enter a 6-digit code.

However, since I don't have children, I have never created a Child Code! And the only code I mention is the 4-digit code for my SIM card when I restart the phone.

I have no 6-digit code. Even when I first used my phone, I didn't have to create one.

I don't know what to do anymore. When I click on one of the few apps that are still on the home page, I can't even open the app! It says: "Usage time has exceeded the limit."

I have attempted to restart the phone many times, in vain.

After an internet search, I did what is recommended for Samsung users, namely pressing the Power button + Volume down button. Nothing happens.

Does anyone have any idea how to get me out of this deadlock, please?

Thanks in advance!