Which means that you were starting the forward cast too soon, which creates a crack-the-whip effect. If you still struggle with that, you can practice your cast while looking over your shoulder to both see and feel when the line has started to load the rod. When you're ready to start your forward cast, almost all of the line will be straightened behind you, and if you look at your rod tip, you'll see that it's starting to load (bend backwards), and that's your cue that it's time to start the forward part of the cast. Be sure to always start the cast gradually, then speed up quickly, then come to a sudden stop. I've heard it described as being the equivalent of having a rotten tomato stuck on the end of the stick that you're trying to launch: if you start too fast, it falls off; if you don't accelerate, it won't go very far; if you don't come to a sudden stop, it'll collapse in front of you.Have dabbled with fly fishing, mostly done it with a breakdown rod while backpacking in Colorado, and off my dock in Okoboji. Hardest part starting out was learning not to snap off the fly while casting...
Another way is to avoid using a backcast and use a roll cast instead. A roll cast is actually a more useful cast for almost any situation where you're not in a boat or over a large open body of water. Once you get a roll cast down, it's easier to feel the rod loading on a traditional cast that includes a backcast.
Here are some videos that explain this better than I just did:
The Orvis guy, the Rio guy (Simon Gawesworth), and the Casts that Catch Fish guy are the the three that I've liked best, so far. Each have tons more videos if you want more detail or something else related to casting.