If you have searched the forums thoroughly and read all of the previous threads on this, or even just this one, and the linked Tutorial threadI don’t think there is much more that we can add.
If applications don’t support kerning, then the font must be made to work without it by adjusting the side-bearings. In any case, the side-bearings should be adjusted first before adding any kerning pairs.
I don’t see any alternative to adjusting the side-bearings.