Hi @shrihari2073
Here's a teardown [https://www.youtube.com/watch?v=4fJWjMKFHUU|video] that may help.
At 12:56 minutes into the video the charge port flex cable can be seen being removed from the phone.
Below is an image to show what it looks like.
Search online for [https://www.google.com/search?client=firefox-b-d&q=Nothing+Phone+%282a%29+charging+flex|Nothing phone (2a) charging flex] to find suppliers that suit you best.
[image|3515306]
(click on image)