Hi Regunathan, I'm facing the same problem you've described.
Have you achieved any solution in all this time?
I have a lot of raster tiles, with the associated mbtile file, but I can't open them as a layer Arcmap.
Any help would be appreciated.
Regards.
Looks like even at 10.6 neither ArcMap or Pro can open mbtile formats, but QGIS does!