You can moan at my boss for not allowing fully WFH.
IDGAF about your boss. If I were gonna moan about something, it'd be about the shitty state of British Rail or some other macro/policy issue, not anything specific to your situation.
That said, I live in fucking Atlanta -- the poster child of terrible American sprawl and traffic -- and have figured out how to make cycling for most trips work. I have no doubt that you can do better. Get yourself a damn Brompton (so you can easily take it on the train) and turn that 40 minutes of walking + 35 minutes of Metrolink into however many minutes of biking, for example.
I live in Manchester. Which is an amazing city for public transport. I work in Cheshire which isn’t.
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Perhaps when I’m more experienced I can find a job closer to home or more remote, but for now this is all I can do.
Nothing you could say will convince me that there isn't even a single suitable job for you right now in Manchester. Or that there isn't a single suitable residence for you right now in whichever town in Cheshire you work in, for that matter.