Bitcoin from a privacy standpoint is not good for various reasons. First, if you make a transaction with someone, that person now knows your account and can easily find out your bitcoin balance, all due to the blockchain being public for everyone to see. Second, if the bitcoin account you are using was created on a website similar to coinbase, kraken, binance etc, your personal ID is completely tied to your bitcoin wallets created in those platforms. Of course there are ways to circomvert those but in a general sense and at its core Bitcoin is just terrible for privacy.