regarding the tax office Spain ask at your bank and they will advise you and tell you... I think🤷🏻‍♂️ I am like you🤣

Hello everyone, I started a month ago in the crypto world, what do you think of my portfolio? I intend to have a long-term investment, do you know what impact there is with the tax authorities in Spain when it comes to declaring income by changing currencies? Better decentralized apps or Binance? Regards.