Thought I would try here and see if any can suss it out for me

I charged my battery (again) today and my mate came round to jump start it. I hooked the battery up and it started up first time I had to check if it was in gear and it was then I stalled it

So then it wouldn't start again. Not even with my mates car hooked up to my battery aswell. It tried to fire up but just wouldn't run.

Any idea as to what it could be?

I have the battery back on charge and I need to get a can of fuel tomorrow as the gauge is reading just off of the red.

Its really cheesed me off now as it did start then it wouldn't start again btw the gearbox is shot that's why I had to check about being in gear when it first started up.