how the wreckage of Su-30 didn't show on any satellite imagery , if 3 radar detect a second plane go down then certainly it would have been child play to locate the place it went down and go to archive photo of the time and find it in the vicinity of where it fall, no such evidence ever shown while its not the case for mig-21
and about radars data , india also published data from two radar so if I am to accept your claim about 3 radar I must accept India claim about it , you knew they actually published those data on On 8 April 2019