To those of you that buy low and sell high with altcoins, after you sell the altcoin for btc, do most of you just hold the btc? Or do you sell the btc for usdt to lock in your profits? Because if u dont convert it to usd... then the profit you made from selling the altcoin isn't locked in right?
From my experience, I usually don't convert my altcoins to bitcoin because I'm losing huge amount exchanging it. That's why we have this so called portfolio and diversification. So I stay away from doing this practice, but I don't know about other though.
•In converting Bitcoins to money is still called trading?
As far as I know, exchanging your bitcoin to fiat is not trading. Trading is like speculating crypto's if they are going to increase or not. That's why you will heard people saying, buy low and sell high. If you exchange your bitcoin to fiat, however, then trading is already out of the picture. Its already fiat money, there's no speculation because you already hedge your bitcoin to fiat, in my opinion.
•In connection with the percentage or price of bitcoins I will go and exchange it to buy in lower price value and sell and high?
Yes, that's the universally accepted mantra in trading in order to profit.
•Will that be a good help? for make my money anonymously grow?
Yes, however, you have to understand that there are risk and its not 100% guarantee that your money will grow that way. You can buy low but then when the price goes down in the next 6 months, then there's no financial gain on your end.