Thanks !
Where should a beginner trade ? If you buy some coins for example on Coinbase (easiest and secure way at the beginning) you have 1,48% fee from USD or EUR wallet to coins and when you want to sell your coins (convert to USD or EUR) also 1,48% fee.
So i need minimum a increase of 3% to get no loss.

When i convert the coins to an other stable coin like USDC i have 1% fee.
How is it possible to trade without such a big spread.