Google Pixel 3a

Find "Wi-Fi hotspot"

Slide two fingers downwards starting from the top of the screen.

Find "Wi-Fi hotspot"

Press the settings icon.

Find "Wi-Fi hotspot"

Press Network and Internet.

Find "Wi-Fi hotspot"

Press Hotspot and tethering.

Find "Wi-Fi hotspot"

Press Wi-Fi hotspot.

Select Wi-Fi hotspot settings

Press Hotspot name.

Select Wi-Fi hotspot settings

Key in the required Wi-Fi hotspot name and press OK.

Select Wi-Fi hotspot settings

Press Security.

Select Wi-Fi hotspot settings

Press WPA2-Personal to password protect your Wi-Fi hotspot.

Select Wi-Fi hotspot settings

Press Hotspot password and key in the required password.

Select Wi-Fi hotspot settings

Press OK.

Turn on Wi-Fi hotspot

Press the indicator to turn on the function.

Return to the home screen

Press the Home key to return to the home screen.

Establish connection to Wi-Fi hotspot from another device

Turn on Wi-Fi on the other device.
Find the list of available Wi-Fi networks and select your own Wi-Fi hotspot.
Key in the password for your Wi-Fi hotspot and establish the connection.
When the connection is established, you can access the internet from the other device.