Ideally you should run your own Bitcoin Node and query using JSON-RPC.

For example, get new address using - https://bitcoincore.org/en/doc/22.0.0/rpc/wallet/getnewaddress/.

But, if you are not pro, you may use third party API and query using cURL.

For example, you may use this API - https://www.blockchain.com/explorer/api/api_receive.