People have gradually lost interest in writing/reading, preferring to speak on podcasts or make videos.
It's not so much that people lost interest in writing/reading but now they have more options than before. There are bunch of people on Telegram and Discord despite the fact that those two platforms don't even come close to forum when it comes to possibility of quality conversation and exchange of ideas.
In addition to the fact that more and more information about Bitcoin and the like, there is less interest in going to forums to look for information.
True, back in the day Bitcointalk was probably the only source of Bitcoin info, and later on that expanded to altcoins as well while situation is quite different now. Add on tha the fact that forums are not as popular as they used to be and this is what you get. Despite all this, bitcointalk is still very much alive and kicking so I am not worries about its future, at least not in the next couple of years.
The number of merits issued in Nigerian Local Board is not matching with the quality of posts there. If Theymos can grant the merit application of Upgrade00 and Charles-Tim, it will help circulate merit in the board. Other merit sources can also come to the board, who knows you can like our pigin english and issue merit to deserving posts. Hopefully we can have our locale board one day.
You might wanna consider using
Report unmerited good posts to Merit Source until you get another merit source. Not going into quality of posts there, but 0.4 merit/post ratio you had during January is pretty good, ranking you 7th from 19 boards in that chart, ahead many of the big boards. That of course doesn't mean that you don't deserve another merit source, just saying that situation in your board is not bad at all.
It's great when I can bring more of you (merit source) to the Indonesian Local Board to help increase the number of merit distributions on eligible posts each month even though in the end my application for merit source was not accepted.
As i suggested to @uchegod21, you should consider using
Report unmerited good posts to Merit Source if you think that some good posts are left without the merit. That topic was a big help to my local board before we got few additional merit sources so it might help you too.