Apple Macbook Pro Showing Severe Problems Within Warranty Period

I purchased my Macbook Pro 15 inch (Retina, mid 2015) this year (2018) and its showing many complaints within the warranty period.

At first it had a charging issue, Where I can't charge my macbook and I went to the apple authorized service centre and they told me a replacement is required. I agreed as the product was under warranty and they did the repair.

Few months later, it started showing a black screen issue and I again went to the apple authorized service centre, and they told me a screen replacement is required. I was wondered because I bought the laptop this year (2018) and it need a screen replacement within few months after purchase. I agreed to do the repair as it was under warranty. and they did the repair.

screenshot for proof:

Now it started showing a white screen issue and I went to the apple authorized service centre, and they checked and told you need to replace a cable which is connected to the hdd. and i again got shocked I agreed again as it was under warranty.

screenshot for proof:

If I'm having this much internal issues within the warranty period, I don't know what to do after the warranty ends. It may show any other serious issues which may cost much. I maylose my macbook because I can't do those costly repairs. I'm feeling bad for the purchase.

Apple please do any action for the above.