Fair enough; I agree that freeing up A4 and A5 is going to be tricky if libraries are used that are challenging to re-code to use a soft-serial approach. And yes, I also agree that it's a XY problem and that we often see these, but then again, at some point you have to accept what somebody wants. The question is what that point is. Even if OP comes up with a more specific set of design specifications, you can keep asking if the specifications are reasonable and if there's another way to solve it. Not saying that the nature of the application should not be made clearer - it would help. But given the language issue, I doubt we're ever going to get at that point.
Having said all this, there are some routes that may be worthwhile investigating, such as:
- Using an alternate library for the INA219 that does not rely on Wire and can be given a custom (Soft)Wire object to work with
- Using an alternate board or microcontroller with more (ADC) pins, such as a Mega-based board.
- Avoiding the problem of too few ADC pins by using two or even more external ADC's such as the ADC1115
It's up to OP to pick and choose from such options and point out if they work - and up to us to decide if we want to offer such options. I can totally understand that it's frustrating to try and get people to give the necessary information so they can be helped in the first place.