It should always start with the amount that you will not mind losing. You understand that it is impossible to count on 100% profit from trade;)
Beginning the investment with $10 or $20 could make that turn into $1k or $2k over a short duration.
Yes, I think it's enough to start investing because crypto is very risky, especially for new traders because there is not enough experience and knowledge. we don't need to be too careless by investing in large amounts when we first start. far better to invest a little but make a profit. remember investment isn't always profitable.