In my personal experience, besides everything else listed, another obstacle is that although there are quite a few writers I feel would match the genre and story type I like to partake in when I'm looking for a 1x1, the gender we prefer to play is non-negotiable (aka I'm boring trash who sticks to exclusively playing females in slice of life, hetero pairings, and that's exactly what everyone else wants to play as well). That alone makes the chances of finding a potential partner like 90% slimmer, but what else can you do? 😂