when all the coins go down, I lose a lot because I bought a lot of coins, what should I do so that I don't lose a lot, please give your input, friend?
at this moment in time where crypto market is not in good condition and still continue in dropping , you can't do anything but to hold otherwise you will lost yout investment. selling it will only make you more losses but if you will wait and hold there is a big chance you can gain in the future when the market will recover .