Backing up your iPhone to iCloud is a great way to keep your data safe. To do this, go to Settings on your iPhone, tap your name at the top, then select "iCloud" and "iCloud Backup." Make sure "iCloud Backup" is turned on and tap "Back Up Now" while connected to Wi-Fi. Do you often back up your iPhone, or is this your first time trying? Let me know if you have any other questions about the process!