Hello , sorry about your problems. My name is Marco and I will do my best to help you.
WPA2-PSK (AES) is the most secure and widely used option for home networks. It uses the Wi-Fi Protected Access 2 (WPA2) protocol with Pre-Shared Key (PSK) authentication and Advanced Encryption Standard (AES) encryption.
With this option, you will need to set a strong password or passphrase that devices connecting to your network will need to enter.