If you are following me you already know that we have made Terminal Animation using Typed.js library. It was also a marvelous library.
If you want to increase or decrease typing speed than change in this code:
const normalSpeed = Math.random() * (100 -50) + 100 // Simply increase or decrease last number 
Want to change the Strings? Change this code:
const phrases = ['Hello, my name is Shah Stavan.', 'I love to code.', 'I love to teach.'] // Add your Strings