kavat genetic code help

[(PSN)LiamRising]

i have recently decided to go for a kavat which was not a good idea as i have tried for 6 hours now in a row farming orokin derelict and gotten zero kavat genetic codes and im wondering what can i do to get them since clearly my current attempts have given me nothing. my current setup is im doing orokin derelict exterminate and im scanning 6-7 kavats per key with a fully upgraded simaris scanner. i have looked around online but people only suggest groups which for me is a no since i tried yesterday and everyone either killed them after they scanned or used a heliocor so no one could get scans plus the kavat spawn is not the issue the fact no matter how many i scan i have yet to see 1 genetic code is.  so my question is anyway to increase the chance or am i just having severely bad rng here?

[(PSN)TONI__RIBEIRO]

That's the major reason people are buying the genetic codes on the market, you need 20 genetic codes that's 10 for the incubator and another 10 for the kavat itself and the chance to get them with is low, it should be higher.