You sure you're talking about the private server (Classic Club 3x)? Because that server has like zero bots and virtually zero P2W donation, I doubt you'd find a classic server with less bots and donation options...

You might want to try Raidfight if you don't mind Interlude. Don't bother with official NA Classic servers, they have active anti-F2P policy, you'll make zero progress without paying VIP stuff.