DS Lite with bent DS game card pins

I bought a DS Lite from eBay last week and discovered that it does not read any DS games. I investigated further and found bent pins inside the game card slot. I am mainly just curious about how fixable this issue is and what tools I need. The seller said that they only had it for GBA games and apparently had no idea about this issue.

Also, how do I attach a picture to give more context?