The mobile game is quite young, so it's obvious why there is less help from the users.
As a Tour Pro, you have stepped on "very fast" greens, and you will stay on these until finishing the next, Master, tier. They are about 20% faster than the scales indicate, and the conversion of elevation to power is most easy: 1 : 1 from inches to feet. That is, a 10 ft putt with 3" elevation needs at least 13 feet on the scale to arrive, plus 1 to get in.
Side breaks become more important with speed. There's a tutorial by G0ld (mind the zero) but practicing is also a good help.
Perhaps you should join a Country Club and look for more help there. There might be CCs around for mobile players, but most of them may be more PC based.
My two Pfennig for your next buy: two short wedges.
Have fun!!