It sucks when nobody looks at your threads for a while buy maybe it's just luck? Maybe interest doesn't happen for a while? There's some fierce competition in the NH boards due to traffic so it's possible your threads just get buried.
It looks like you primarily post looking for/selling threads. It just means at the time you're posting that either no one is interested in what you're offering, or no one is able to fulfil your request.
It happens to most of us - I wouldn't take it to heart timezones can be a big factor for things like this and topics can get lost a lot easier since the board are more active now
Selling and buying threads are hard! You may have more luck just searching for threads that already exist for what you want to sell or buy (since it seems a lot of people don't check other threads and just post their own, which is why the threads get bumped down so fast)
don't worry too much about it. sometimes threads get noticed and people reply a lot, other times they get lost in the mix. it's nothing personal, just sometimes people don't notice a post or don't have anything to reply with.
Honestly just comes down to how many people are interested in what you're posting. I posted a thread about native flowers ages ago and it got like pages and pages of replies but i might post a question not many can answer or something less interesting and it might not get very many replies. Trading or selling threads normally get less replies