Dell Latitude 5490 Laptop (I5 core 8th gen processor)

This is a used laptop! I’m a small YouTuber and needed a laptop for editing my videos. I got this laptop used from my friend, it’s a great laptop only problem is about a month after I got it the battery stopped charging. I bought a new battery and installed it into the laptop but it still won’t charge the battery. I bought a new charger thinking that might be the problem but unfortunately not. I don’t have any time to fix this and I don’t live in the city where repair places are more convenient.
The new battery is about 30% charge and the laptop turns on and works but is slow from lack of power.

THIS COMES WITH:
Laptop
New battery (in laptop)
Old battery (in the box in the pictures)
New Charger

{Also if you don’t want the stickers on the laptop I can remove them for you. If you have any questions or are interested please message me}