Privacy concerns for a publicly displayed Bitcoin address
This is the design of Bitcoin; you can use multiple wallets to obfuscate the transactions (or third parties etc.), but ultimately there is always a paper trail that anyone can access; the privacy comes from not being able to tell who is operating any wallet.

If this public-ledger is a concern for you, you should look at various privacy coins such as Monero (here's a guide to the most common ones I just Googled), as this is the whole reason they exists instead of their users just using Bitcoin.