Hello,
i don't know bitcoin very well but i have money in btc on coinbase. I am not sure have money on coinbase is very secure. What do you think about it ? Is there a way for have bitcoin with security because i scared coinbase block my account or give information on how much money i have on it, i think it is not very anonymous
That depends upon how much bitcoins do you have on coinbase ? Since you mentioned that you are new to bitcoin, you would probably have few satoshi or 500-1000$ worth of bitcoins. If that is the case, you can keep them on coinbase. Once you have a bigger portfolio, it will be better to move the coins to desktop wallet and avoid storing your coins on online wallets where you have no access to private keys.