Your account shows a long string of decimals. Just how many decimal places can Bitcoin be divided into?
First, the facts: 21 million bitcoins amount to about 2.1 quadrillion satoshis.
The reasoning behind it: Outputs that are too small often aren’t enough to cover the fee when they’re spent. By default, nodes also treat these outputs as “dust” and won’t relay them.
$BTC You don’t have to buy a whole bitcoin—you can buy a fraction of one, or even less.
There’s no shame in taking it slow. Staying in the game matters more than how much you make in one go.

This is not investment advice. Don’t copy it blindly.