Don’t fret, OP - there’s a small chance that it was genuine, and even if it wasn’t, console yourself with thinking, who on earth would be reduced to doing that if they didn’t really need the money?
I know I was conned once,,by a a bloke in his 20s, apparently in distress - his young child was sick on the other side of London and he had no money for the bus fare.
Although I was pretty sure it was a con, I gave him a few £ - just on the off-chance that it wasn’t.
Not long afterwards I saw him get on the same bus as me. We made eye contact, he sat a few seats in front. But when he got off soon afterwards, he gave me such a long ‘look’ - sort of smugly, cunningly knowing - it said as plainly as anything, ‘Yes, it was me, and yes, you were a right mug - I saw you coming.’
Another time when I was with dh, a woman who was almost hysterical - something about her car - begged for a desperately needed fiver. Again, we were 99% sure it was a con, but just in case it wasn’t….