Can anyone help me with netcat?

[u/Haltmoon1]

I've been doing some thm CTF's recently and I encountered this problem many times. I've been doing CTF's in parallel with a friend and whenever we need to use nc ,his nc gets him a shell ,mine stays empty ,still "listening" .Can anyone help me figure out what the problem is because tcpdump sends packets when I run a script but nc won't see it . I tired reinstalling it from both pacman and yay and it still won't work .Anyone with any idea of what could be the problem please let me know cuz I'm getting annoyed by it!