What he said!
The Starter equipment has a low trajectory, and at elevated targets that trajectory is even flatter - long shots unevitably roll forever.
You have a custom ball which helps a little, but better clubs would improve that behaviour largely.
I'm not saying that you must buy all clubs now, but one or two decent wedges would be a good start - those Starter wedges suck, foremost in the short game of pitch & chip.
Generally, playing with Starter clubs, you must respect what they can't do: Hit to the pins of elevated greens and stop the ball on the dime! In many cases, you must find the spot to land anywhere on the green which ensures that the ball stays on the green, or lay up and try with a shorter club. E.g. CCC#1 and #2, you'll have to roll it through the front opening (or play back from the rough).
(I know what I'm saying, I did this till Master)