At this time it can also be said that a good time to buy Altcoin is to do research this year there have been many very basic reductions that are good for buying, so all the risk is in your hands
Its hard to time the exact enty or exit pount for maximal profit, I agree with this. But you can make ball park decisions taking a few metrics in consideration. Good example is sentiment. When even crypto enthusiasts haven been silence about itfor a while then we are probably at the bottom. In opposition to last January when taxi drivers started to talk about crypto and mking it a full ime job.
You should not expect to gain a lot of profit in one time, just try to build your momentum through create a regular profit from your trading activity and it will help you a lot rather than try to get the maximul profit that will give yuo a lot of risk if the market will have dumped by those manipulators. It will much better.