Repairability

My Macbook Pro I have a Macbook pro retina 15 inch, that I bought in 2016. A few days back, the battery started bulking up and the laptop has totally stopped working. It has grown so big now that I cannot keep the laptop in a flat surface; it almost rocks like a see-saw. The touchpad panel is also feeling the bulge. The Macbook pro is not even switching on now, presumably to safeguard against battery explosions. I bought the laptop 4 years back, for about 200,000 INR (~2700 USD / 2200 EUR). Electronics are very costly in India :( This is the pre-touchbar Macbook pro. I did not like the new keyboard in the then new Macbooks (the first edition with the touchbar). Luckily, I did not purchase the touchbar version which probably is one of the worst electronic devices ever manufactured.