The advantages of buying TUSD instead of USD?
TrueUSD is the same as any other collaterized stablecoin. It's pegged to the US Dollar, bringing you the convenience of Fiat money without ever touching banks. The stablecoin is a great tool for day trading when you want to get the most out of the crypto market without going through all of the hassles of cashing out to Fiat. While it does come with its benefits, TUSD cannot be trusted for storing your money in the long term because it's not backed nor regulated by the government. Just like UST fell all the way down the drain (even though it was another type of stablecoin), the same can happen with TUSD, USDT, and other stablecoins on the market. There's nothing 100% guaranteed that will last a lifetime.
I'd prefer to sell crypto directly to USD just to avoid all of the risks of holding stablecoins in my wallet. Ultimately, you decide what to do with your money. As long as you don't invest more than what you can't afford to lose, you'll have nothing to worry about. Just my thoughts