Hey there,
My question is that what should i do i am getting Bot attack [Xfakeplayers attack] on my server?
As some people do that to the highly ranked server on GT and that servers got ban. ?

I don't know anything about what Xfakeplayers is, but yes servers that have fake players may be deranked or banned. It may be possible there are mods or settings you may be able to use to prevent it (such as limit number of players per IP). Since I've never run a server for or played CS16 (assuming so because of your favorites), I do not have specific ideas for you.

I am using the latest dproto which prevents all the crashes and Fake players buy still people can attack using XFakeplayer and still i haven't founded anything that prevents using tha fake players.