Stay at Home
You may shop electronically from anywhere. In practice, staying at home to shop is preferable. It's possible that your transaction will be snooped on if you use public Wi-Fi. Even if you think you've connected to a secure Wi-Fi network, you might be living in a fantasy world. Nothing stops a scammer from setting up a mobile Wi-Fi hotspot with the same SSID as your favorite coffee shop. Worse, your phone won't be able to tell the difference and will happily connect to the fake.
So when shopping online, always use a private and secure connection (ideally your home Wi-Fi). If you must use a public Wi-Fi connection, always use a VPN service to secure your connection. ExpressVPN and NordVPN, for example, encrypt your traffic between their servers and your device. This stops hackers from intercepting your connection and spying on you or infecting your device with malware.