There is always advice that some people fall for, especially new people
Never buy a currency while it is at the peak of its rise because the profit will be small and the loss will be large.
If you see the currency has risen significantly, do not be greedy, this will pass you by, instead try to gather information about currencies that are expected to rise and benefit from buying them while they are at their lowest price, then the loss will be small and the profits will be large.
Always invest in relatively stable currencies, lasting profit is better than risk.
Although you can allocate an amount for risk, but put it while you are ready to lose it, and keep most of your investments in a lower risk ratio.