Price manipulation always exist on any market, i can see also pump and dump price on stocks market and that mean price manipulation can not be avoid on the any market, although that market regulated. Since the market cap of the asset is low ,will be possible to manipulate it by whales. To avoid more loss in any trading we have to use stop loss and avoid use exchange that not provide this feature.
We could say that manipulation is bad but we can't rid them out since they are parts of crypto development. Crypto investment is just a full of risk and only risk takers might survive in here. We often to say that, those whales are taking advantage over other as they capabilities to do so.