Mine is also not much on the ground. For this reason, I have outfitted my dragon's enclosure (larger than a 120 g) with a lot of different elevated spaces. What he uses on the ground, however, are caves, niches... He uses several caves, he dug a burrow behind an aloe plant, he squeezes in between the wall and a branch.
Really walking around on the ground, I only see him to access food and to access the place he always poops. And then, he either goes up or into some hiding space.
So, he uses the space, but just not with walking around on the floor.
If he needs to cross from one side to another he simply used the ghost branch that connect the two structures
Mine would also do so for sure! (There is a long structure towards the back of the enclosure, from which he can access one towards the right.)
Typical Taco routine: He comes out of one of his caves, goes up, basks (one of two spots) while looking out of the window or might watch a fish tank (towards the left), then might jump down to access food or to poop, then climbs up again looking out of the window. When it's time for sleeping, >90% chance he goes into one of his caves (other 10%: sleeps at his basking spot after looking out of the window long after the lights are out, and is then active very early on).