I use the option to convert my USDT to crypto, to 'hold', mainly to wait for a good long-term increase and then reconvert them to USDT... Am I doing it right?

Forget everything you think you know about cryptocurrencies and invest with the security of making profits, increasing capital, invest with moderation and consistency. Stop reading speculations from people who write with emotions... Cryptocurrencies are still something new, and Binanc3 tells you which ones are popular, invest in them. WITHOUT FEAR and for the long term.

Do not trade, you might experience what happens with gambling.

Learn what a stable coin is.
A pair. Example: BTC/USDT.

You can sell in a large rise over a short period and buy again during the correction. (small adjustment drop).

Buy/sell: transition from one cryptocurrency to a stable cryptocurrency. (Keeps its value)

Usdt "theter" is a stable coin.

Currently, the cryptocurrency market is uncertain, nobody knows what will really happen, but it is undoubtedly revolutionizing the present and is the future of the economy.