What does "Chap" when it describes a person? [closed]

Hello I am a student and I was wondering what "chap" means in this particular form.

Because you ‘re not the kind of father a chap could go when he is in trouble

These words are from the play "An inspector calls", and I couldn't understand its meaning.

After seeing Merriam Webster Dictionary, it states that chap as a noun have multiple meanings and they are

the fleshy covering of a jaw

the forepart of the face —usually used in plural

Source : here

And when I saw the online Dictionary dictionary.com it states that chap mean

a fellow; man or boy.

a baby or young child

Source : here

I got stuck not knowing what chap means in this line. does it mean a miserable guy or it means a a young boy or what ?

Its my first question for me here so please inform me if this is the right place to ask such a question or no.

Thanks in advance.

The only dictionary that adds a caveat about this sense being rather old-fashioned is Wiktionary:

chap (plural chaps) (dated outside Britain and Australia)

A man, a fellow.
Who’s that chap over there?

But I'd have to add that the example given,

"Because you're not the kind of father a chap could go [to] when he is in trouble"

itself conjures up an old-fashioned, upper-class impression, even in the UK. It's the sort of thing you expect a croney of Bertie Wooster's to say, not the average man in the street. So this is a higher-social-register usage of 'chap'. 'Can't A Chap Go For A Run In Peace?' [Boris Johnson, Huffington Post]

Contrast say

"There were a couple of chaps in the car park who looked a bit suspicious"

which is readily identifiable as everyday speech in the UK, pretty much devoid of social register. In such examples, 'chap' is informal, just a less highbrow/remote/clinical replacement for 'person'. Often interchangeable with 'man'.