And, for every transaction, the minimum ADA required is 21000.
I wonder where this information is from. Perhaps you made a mistake? That is too much and no one would want to use it if it requires 21k ADA to transact.
By the way, thank you for your Leo content. May I recommend reading this article to learn more about how to do it better. 😉
RE: CARDANO - A Blockchain platform and its future