This whole affair / fiasco would be hilarious if it wasn't serious. This is penny pinching on defence.
PLAAF has had a fifth gen aircraft in service since 2017 to which the IAF has no counter,
some countries have started work on 6th gen fighter aircraft and we're still debating MMRCA.
Su-57 is likely not true fifth gen and Russia is not in position to make and sell given their need for aircraft.
IMO buy a few squadrons of F-35. And a few squadrons of Rafale or Eurofigther Typhoon to back them up.