Bhop

The legit way of bhoping is binding +jump to mwheeldown.
You do not get banned by the server or admin if you bhop this way provided you are not using hyperscroll or freescroll.

If you bind +jump to mwheelup too and then spam your scroll wheel up and down regardless of your jumps, it will look as if you are using a script to an admin who checks your keypresses. And you cant bhop like this, you will lose speed etc.

I suggest you search on YouTube for bhopping guide.

If someone was banned by server, then they not bhopping legitimately.

Some players like to try their luck by lying to us on forum saying they never cheated but got banned by server anti cheat. These are fruitless attempts. We do not unban players banned by server's anti cheat.