Not only for Nigerians, I think Bitcoin savings will be the best for people all over the world, those who are connected to cryptocurrency will always be interested in Bitcoin. If you think in general that if you save USDT, it will never give you any profit or loss in the future, but it is a stable coin. But if you can save in Bitcoin, it is ready to give you high returns in the future, so I think saving Bitcoin is better and holding it for a long time. Although there will be a possibility of loss in Bitcoin, when the market starts to fluctuate, there may be losses, but it is better to invest for a long time.
But if you save USDT, it will not be your loss and profit, and the risk is low here. However, due to market fluctuations in Bitcoin, it has volatility and there will be a possibility of loss, but don't be afraid, rather invest in Bitcoin, you have to hold it patiently, it will give you financial freedom.