I believe that everything you describe, the most ridiculous thing is that I find that investing in the cryptocurrency market requires luck, not how good your data analysis is!
Luck can only be applicable in the level at which what your investment grows over a short period compared to other markets which is something you obviously cannot know until it happens. This is the reason why it is usually good to put your eggs into at least few baskets, to be able to cut across in the profit as well as the loss as the case may be. Heavy manipulation will always be there, it is only left for you to understand what you are doing, have a strategy and play with the manipulations to your advantage.
If you trade today and lose your coin price today Think you are at risk and if you are just starting to trade today and want to start to buy a coin you are luck and you can afford a cheap ethereum right now.
This is not even about cheap Ethereum, this is certainly about how vast you are and knowledgeable you are when it comes to trading effectively. Day trading is a high risk and you really want to be ready to learn as much as possible, gain some pretty good experience by practicing with funds from demo trades and seeing how good you go over time. In that case, you will be sure to get something substantial from it without adding any serious emotion at all when it comes to you trading.