I think the trading is also heavily "Bott'ed" too.
I push a low price, and almost immediately a new bid is entered with only a fraction lower than my entry, so they kinda wall you off.
But it's not unique to CEX, it happens with almost every exchange now.
Never used bots myself have you? I know you can get 'off the shelf' bots or create your own, wondering if its worth investigating?
Automated trading / bots can be useful for certain trading styles. This website has many pre-made bots or you can customize your own. They have API support for leading exchanges including CEX.IO