Real way to get players back on blockland: Host DMs, TDMs, RPGs and mechanically inciting servers. The problem isn't a lack of players, but a lack of eye-catching servers. There's probably 200 people online, but maybe 200+ more people who scan the masterlist every day for servers and just leave because nothing catches their interest.
Use clickbaity names, all caps or {DRUGS} or whatever the hell makes your server stand out.