Blank screen on hard reset but still working. How repair?

I've a Samsung Galaxy S20 fe. The screen had been glitching but is now black. It still works though as alarms go off and receives calls on blue tooth in the car.

Money is tight so would like to repair if possible. Is this possible? Can I self repair? Is it likely to just be the screen or something else?

Should say the charging port also does not work 😬

Thanks.