(iOS/Android) Should I prefer shared codebases (j2objc, C#, Python) or full native AND confortable solutions (Kotlin and Swift)?(Logic code, not UI)?

[Umar]

Hi, I would like to submit a question about a particular case, I would like to know (ios/android) should i prefer shared codebases (j2objc, c#, python) or full native and confortable solutions (kotlin and swift)? (logic code, not ui) Please answer the question please.