Bitcoin is difficult to explain. I also felt difficulties in understanding bitcoin for the firs time. Let's share how to explain bitcoin to children of teenagers. In My country I can say 98% children don't know bitcoin. In fact, bitcoin can be future money. If the children not familiar with cryptocurrency or bitcoin, how can they face the digital era in the future.
I have for the last 2 years been teaching teens and preteens about bitcoin and cryptocurrency. I have learned that because they don't have preconceived notions about how the world works, its much much easier to teach them about crypto than someone in the late 20s or higher. kind of in the same way as 2 years olds understand how to use iPads, and some 40 year old struggle and need help with the basics of iPad and they have to have their kids teach them.
this is not a problem for children and teens.