​Looking for honest feedback on the opening chapter of my post apocalyptic novel set in London Underground

Hi everyone,
I’m currently working on a post apocalyptic novel called London Tube 2033.
The project was inspired by the atmosphere and idea behind Metro 2033 by Dmitry Glukhovsky.
Years ago, the Metro universe encouraged writers from different countries to imagine how humanity might survive after the collapse of the world in their own underground systems.
That idea stayed with me.
Instead of Moscow Metro, I chose the London Underground as I’m living in London.
I built a story beneath abandoned stations, tunnels, ruined sectors and isolated communities trying to survive underground.
I’m looking for a few people willing to read the opening chapter and give honest feedback.
Not praise.
Real feedback.
Atmosphere, pacing, characters, what works and what doesn’t.
If anyone is interested, I’d be grateful.
Thank you.