Solo lobby method that works with fast traveling?

Hi, I’m new to rdr2 online. I just wanna play a bit around New Austin solo, I’m able to get a solo lobby and keep it without people joining but the moment a try to fast travel in a post I get a full lobby

I just wanna play solo and chill, I just beat the story for the first time, and just want to do some missions around New Austin because in story mode there is not much to do

The method I used for solo lobby is change of appearance, but when I try to fast travel in a post I get put in a full lobby

Any way around this? Can I fast travel and keep a solo lobby?