What would you return in case this situation happened?

No need, the numbers passed are assumedto be always positive

Check my solution

Thank u for the answer!

but this solution have only one iteration with array

array size is not large.

Too much words

Solution doesn't account for negative numbers (two lowest POSITIVE integers)

Any solution that contains sorting the values is horrible in terms of performance and should be avoided.

Imho moving loop based algorithm to function with proper name is at least same readable and still has much better time and space complexity.

I don't know that it is best practice, but in essence it is the same as what you submitted. The linq solution is more succinct and readable at glance versus trying to disect the logic in the for loop.