If I lost most of my capital in one coin, I will hold the first to coin it up again, whether it can be called trading or not?
Give your opinion

I do not understand what you mean
In this case, the capital you have used, the most profitable,
thus you will not lose your capital,
But if you sell below the price, surely you will lose capital,
the so-called trade there must be a profit as well as loss.
If you have knowledge and experience of trading then it is better than holding, because by holding bitcoin you will have to wait for long time but if you trade affectively then it is more profitable than holdings. But if you dont have required knowledge and skills then avoid trading because you will lose all or some of your money. Anyhow trading is good.