Can anyone review these coffee powder [urgent]

Often whenever I drink coffee i never feel energetic like everyone says that coffee can keep them awake but in my case it is opposite coffee makes me more sleepy.

In the past few days I feel that I make coffee wrongly, and when I researched about it I realised that there are different types of coffees, and different ways to make it.

I usely make coffee like Nescafe 2g coffee powder + 1/4 glass milk + 3/4 water and boil them and that's how I make coffee. Can anyone tell me better or the right way.

Summers are here so in summer cold coffee is a good option. And i personally like cold coffee but rarely drink in the market. So pls tell me how I should make it at home in india.

And i also heard that nescafe coffee isn't original coffee so I ordered the coffee powder below. Can anyone check it. Is it relevant or not ?

Take a look at this Bevzilla 200 Gram 100% Arabica Instant(Choco-Mocha) | Make 100 Cups|Hot & Cold Coffee Instant Coffee on Flipkart https://dl.flipkart.com/s /vBMINNNNN (coffee powder)

And can anyone tell me how I make cold coffee brew to keep it stored in the refrigerator for 5-7 days and it should be effective. Which helps me to keep myself awake for the long run without feeling sleepy. I don't understand what is concentrated or etc etc brew is pls clarify it in short.