How do you keep track of your wallets and on chain transactions? (and keep your privacy)

Using Ethereum, it's just natural to have multiple wallets. I was wondering how are you keeping track of all these wallets, balances, and transaction you've made?

I'm aware of apps specialized for taxing and some fancy apps (like debank and zapper etc.) but I'm looking a more privacy-friendly way.

Using bare Excel sheets can be very verbose.