I'm not the ukfag you're asking but the main reasons are probably:
This board is dead.
Most of the people that post in this thread don't add, they just drop their steam and leave.
The people who do add mainly add on if they can smash/get nudes and if you don't have a typical fag/weeaboo profile that makes you look like a cuteboy, odds are people aren't going to add you.
A lot of people avoid these threads because of the same people that post in these threads over and over saying the same thing every time how they want friends, no one to talk to, play vidya blah blah blah or people that post that cause drama whenever they do.
Honestly if you're looking for people to talk to and friends, try discord servers, i've met plenty of people that i talk to and play with from them and even met my bf who happened to live right next to me