Bitcoind daemon get received notifications by public address For my project I need to check the balance of a public address using bitcoind. Can I do that without importing the private key, only by public address?

Need solution no dependence, because I tried with blockchain.info API and after x requests, they blocked me. I need to check a lot addresses every 30 minutes.
Instead of polling many addresses every 30 minutes, you probably want to import your addresses into bitcoind, using bitcoin-cli importaddress and then have bitcoind notify you automatically when a new transaction comes in, using the walletnotify option.

See for example: How do I use walletnotify?

There are a lot of details to get right: transactions might never confirm, the transaction ID might change. When bitcoind loses connection to the network, you want your script to be able to handle that. etc.