Bambi

Can you turn on the phone? If you can, maybe you could find some recovery softwares on google. But I’m afraid this phone is too old, your chances of recovery are slim to none.

Your screen went black perhaps because the LCD cable has become dislodged from the logic board. In this situation, you need to change it.

Maybe you can try the damaged iPod data recovery tool. If it can scan out the deleted data, then recovery is possible. If not, you may ask repair shop for help.

In this case, I think there is no program can enter your internal storage and extract files. You need to take it to a repair shop .

Recovering the data required making the phone usable again, replacing a few individual chips that controlled functions like USB, touchscreen, and the display.

Some small electronics gadgets have suffered a catastrophic failure from something internal sustaining physical damage when they have been dropped on the floor. Take it to a repair guy - if such a thing still exists or replace it.

You need a tool that can extract data with USB debugging disabled. Search “broken android data recovery” on Google, you will find many such tools. Hope that helps.

The easiest way is to use broken android data recovery tool, it has mehtod to detect your device. Some tools are available, such as MobiKin Doctor, EaseUS,ETC. If this way doesn’t work for you, you should buy a USB-C OTG Hub, it will enabled you to connect the hub directly to the damaged p20 pro via its USB -C. Cable. The hub itself has an HDMI port that you can connected to your monitor and used to display your phone.  Using the mouse and keyboard ,then you would able control and access the phone via the monitor and get data back.

Logic board repair is advanced micro-soldering repairs, especially the CPU repair. This is not a DIY repair and just very few micro-solderers can accomplish. If you want to have it repaired, contact some repair shops.

Try to put your device in recovery mode and set it up again.