It's very cute! Your chibi dragons are absolutely adorable, and I can see the kind of direction you're taking. So far you feel like an intermediate artist: you know what you wanna draw, you know how to make some designs, but feel a bit too repetitive. Dragons, as mythical creatures, can potentially have infinite shapes possibilities, but rn you feel stuck in one or two. Just in How to train your dragon you van see there's a lot of variety, as long as different dragons from any show (mondter hunter too is a nice example)
I feel like your next step is about researching: trying to understand what style you want to prioritize (cartoony? DeviantArt furries? Disney anthros/ferals? Anime?) and learn how those styles uses shapes and how do they turn real animals into theyr version.
Studying other animals will also help a lot with dragons! Lizard and dinosaurs can be the first tought, but also mammals (like the wolf-like dragon from the ghibli movie), can help, expecially the less used ones, imagine a dragon with a simil rhino shape.
The most important thing right now is to try to not focus only on your safe zone, but to vary a bit, to explore other styles, other shapes, even only a different way to make likearts, or forcing yourself to use a palette you found on Pinterest or somewhere else. There's a lot of potential here!