My server is usually a freebuild or a Space or Old times server
From what I've found about hosting my own server, titling it "free build" is just about instant Self Delete. It's undecided. It's typical. It really doesn't stand out from the other 9 million freebuilds out there. Giving it a definite theme that sounds like it has some particular goal can help a lot. I don't know what you mean by an "Old Times" server, but that and Space should make your server a bit more appealing to someone browsing through the server list, just because it sounds unique. You've got to try and think in terms of someone else's perspective of your server. If you saw your server title, would you want to join it? Would it stand out? Would you know that there was something there that you couldn't get on other servers? Sure, RTB allows you to see more in depth into a server, but often times the server's title is the only thing people bother to look at. (As well as possibly the Ping, Player Count, RTB or not, etc.) So whether your ping is high, low, or whatever, a short and sweet description of your server in the title is absolutely necessary to generate any interest from other players. But even then, there's no guaranteeing that people will want to join it after all.
In general, some themes that I find to work particularly well are anything that involves violence or role playing. I suppose there's just a large audience for that. Similarly, "free admin" will probably get you quite a bit of players, but you should generally avoid that because of the mass chaos that'll cause amongst your players.
Currently, I try to put my theme and one fact about my server into my title, in particular my large brick menu. For example, right now it's "Future City Build (Large Brick Menu)". It gets a fair amount of players, about 1 an hour, which is still too much for my own tolerance for other people. But you're best off just experimenting with a few different titles.
BTW, when you say no one joins your server, do you literally mean that no one EVER has joined your server, or you just don't get people often? If you never get anyone, that sounds like your own technical problems. If you're not sure, I'd try testing out one of those super popular titles, just to see if anyone CAN join.
