I checked out your FB page and have a few thoughts. As mentioned above, Instagram might help. I've sold a few on Insta to people that I had never heard of on FB. Problem with FB and Insta is getting more followers, it takes a while. You have to post on there quite often to keep yourself relevant. On FB, join as many knife maker groups as you can and share and post in those too. There are also survival, hunting, fishing, etc. groups too. There are a lot of customers lurking in some of those groups. Oh, and don't blast a pic of a knife in 10 groups all at the same time, spread it out over a couple days to capture more audience.
As for your FB page, here's my advice. Practice photography, a lot. Online sales will improve with picture quality. Not trying to knock you, but you have a lot of really dark photos on there and a lot of quick snapshots with paper numbers. There are 3 or 4 knife pro knife photographers that are really popular, study their work and try to learn from them. We all struggle with the pics a little, you're not alone.
You might try doing some WIP posts on there too. I've done that a few times and guys start tuning in to see daily posts about a project, seems to generate a lot interest. You might try working "yourself" into your page more too. People like knowing the maker, they will buy more if they feel they have a personal connection to you. If you post a video, turn the camera around and talk to the camera. It's hard, but I really think it helps.
If all else fails and you still have extras on hand, just wait til Christmas. Every year I get several last minute requests that I can't fill. People think you can just whip out a blade in a day, lol. I also get hit up a lot around graduation times and the start of hunting seasons. It all just takes time, keep improving on each knife and keep working social media. It'll get there.