How can I bring this ₹2.18 lakh gaming PC build under ₹2 lakh?

The overall parts list is solid, but the memory and SSD appear unusually expensive. Consider a cheaper 2x16GB DDR5-6000 kit, including CL36 models if necessary—the real-world gaming difference from CL30 is generally small. Used RAM may also be worth considering if it comes from a reliable seller. The X3D processor is fairly tolerant of small memory-latency differences.

You can probably save money by switching to a more affordable 32GB DDR5-6000 CL30 kit, choosing a cheaper Lexar or similar NVMe drive, and using a less expensive airflow-focused case. The 850W Gold PSU is more than adequate and can stay. The Arctic Freezer 36 should also be sufficient for this processor, so an additional CPU cooler isn’t necessary. Since the graphics card is the weaker part compared with the CPU, dropping to a Ryzen 5 or Ryzen 7 7600-class chip may make more sense if you don’t plan a future CPU upgrade.

The build is heavily weighted toward the CPU. A Ryzen 5 7500F, 7600, or 9600X should perform similarly in most gaming situations while freeing up money for a stronger graphics card. Moving up to an RX 9070-class card would usually provide a bigger gaming improvement than keeping the 7800X3D with the current GPU. You could also look for a less expensive SSD, such as a Patriot P400 Lite or SanDisk SN5100; they should feel just as fast for normal game and operating-system use.