In this example, we are using the Pi Testnet.
Subject: To test the Pi sending from your wallet.
Open the Pi app,
Click on the 3 lines at the top left,
Click on Pi Browser & sign in,
Ensure you are on the Pi Testnet screen.
Click on Send.
Copy the wallet from your friends and paste it to the send arrow sign.
You can choose any amount less than given by the Pi Testnet.
Let's say 1 Pi
Finally, click on the SEND button.