I'm not in anyway related to an Indian or India. For your sake, making a statement and thus a judgment based on someone's background (race, skin color, ethnicity, religion, gender, etc.) is weak and ridiculous.
Now, FYI: China conducted many war games using its J10C and J16 against SU-35's. Both J10C and J16 gave the SU-35 very humiliating beatings. Su-35's Snow Leopard could not detect the presence of either J10C or J16 until incoming missiles were fired at them. With today's missile tech's (China's PL-12 and PL-15), SU-35's had no way of espacing even with its powerful engines.
After Russia sold its first batch of 24 Su-35's to China, China no longer wants to purchase any more Su-35 and even the Su-57. In fighter jet technologies, Russia's fallen behind China in many critical areas, including radar, situation awareness, and stealth that are critical to today's warfare. The days of dog fights in every aerial encounter are over. It was reported (or rumored) a couple years ago China proposed to buy more Su-35 engines but Russia would only sell the engines with more Su-35 purchases. China refused because PLA concludes Su-35's have no place in its airforce fighting the Indian or the American airforces.