Idk from what I've observed, seems like a lot of folks are waiting until the villager goes into boxes before posting about them? Which means whoever wants the villager needs to have an empty plot already. Some folks who might want the villager might not be able to get a plot open in time.
I posted my villagers for trade the moment I answered their bubbles telling them to leave, bumped the posts in the morning and evening over the course of 2 days, and they got picked up. Even Wendy who I thought no one would ever want, got picked up, close to the end of her 2-day timeframe mind you.
So your best best I think is to post as early as possible to give people as long as possible to comment/get their plots open, bump periodically at spaced-out intervals (eg. before you go to bed/after waking up) to pick up as many overlapping time zones as possible.
I posted my villagers for trade the moment I answered their bubbles telling them to leave, bumped the posts in the morning and evening over the course of 2 days, and they got picked up. Even Wendy who I thought no one would ever want, got picked up, close to the end of her 2-day timeframe mind you.
So your best best I think is to post as early as possible to give people as long as possible to comment/get their plots open, bump periodically at spaced-out intervals (eg. before you go to bed/after waking up) to pick up as many overlapping time zones as possible.