Tether(USDT) is not the only stable coin.
Stable coins are cryptocurrencies that has a fixed price and zero volatility.
The following are stable coins you can use in place of USDT.
1. Tether (USDT): Tether is a type of cryptocurrency known as a stablecoin. Its value is tied to the US Dollar, so it's less likely to be affected by the volatility of Bitcoin.
2. USD Coin (USDC): Like Tether, USD Coin is also a stablecoin pegged to the US dollar. It offers stability in comparison to Bitcoin's fluctuations.
3. Binance USD (BUSD): Another stablecoin option pegged to the US Dollar. This is offered by Binance, one of the world's leading cryptocurrency exchanges.
4. Dai (DAI): This is a decentralized stablecoin from MakerDAO. Dai's value is pegged to the US dollar but it's maintained through a system of smart contracts on the Ethereum blockchain.
5. Gemini Dollar (GUSD): Issued by the Gemini cryptocurrency exchange, the Gemini Dollar is a stablecoin also pegged to the US dollar.
6. Paxos Standard (PAX): Paxos Standard is a digital asset that is pegged to the US dollar. For every PAX that's in circulation, there is a corresponding US dollar held in reserve.
7. TrueUSD (TUSD): Like other stablecoins, TrueUSD is pegged to the US dollar, and it offers transparent attestation processes to show the backing for each TUSD in circulation.
Remember, even though these cryptocurrencies are designed to be less volatile than Bitcoin, investing in cryptocurrency always carries risk. Make sure to do your own research or consult with a financial advisor.