Flavorings are usually not sweetened, after all a popular use would be to make candy by adding the flavoring to solid sugar. You can sweeten the
juice with sucralose sweetener. You can add a candy flavor with Ethyl Maltol, otherwise known as Cotton Candy flavor. Something may be available with that already mixed, but I don't know of one. TFA Apple Candy flavor is just a less realistic apple. For apple flavorings, I prefer Lorann but TFA is also good, a little more tart. The only other I've tried is FA Fuji, very highly reviewed, and realistically captures everything I dislike about some kinds of apples.
Approx. recipe:
for clearomizer/low power:
9% LA apple
7% EM (TFA solution or equal using the crystals)
6% sweetener (TFA)
For higher power, drop to 5%/2.5%/2% . The high candy version works better with true MTL, e.g. Protank 2 at 5.2 W.