How can I trade cryptocurrency the way it meant to be fees-free, unidentified, and secure? My first post here and my first time to look for cryptocurrencies
My understanding of cryptocurrency that it is uncontrolled and no mediators and no fees for exchange
Today I registered at coinbase and it asked for my ID and veridication
and when i wanted to purchase coins I got 10% going for fees !!
How can I trade cryptocurrency the way it meant to be fees-free, unidentified, and secure?
My understanding of cryptocurrency that it is uncontrolled and no mediators and no fees for exchange

Bitcoin is a protocol for peer to peer decentralized network. BTC is the symbol for bitcoin, currency used by this network. Every bitcoin transaction involves a fee which is decided by users. Check https://mempool.observer to see what fee rate is used by others for unconfirmed transactions. This fee is an incentive for miners to include transactions in blocks and they normally prioritize transactions with higher fee rates.

Today I registered at coinbase and it asked for my ID and veridication

Coinbase is a KYC exchange.

and when i wanted to purchase coins I got 10% going for fees !!

This fees is decided by exchange and has nothing to do with Bitcoin protocol.

How can I trade cryptocurrency the way it meant to be fees-free, unidentified, and secure?

Check other exchanges that don't require KYC and allow P2P trades and use the one that works better for you:

Bisq: https://bisq.network (This may require some security deposit)
HodlHodl: https://hodlhodl.com