Re: What am I doing wrong?
Vivs are fairly popular and aesthetically pleasing. It's not always suggested as a "simple" caging option because its usually a DIY project. LG has an entire stack of vivs for her herd.
As for burrowing while out, perfectly normal for a burrowing/sleeping/"cuddling" type. My boy only sleeps when he's out. I'll have him in my lap and he'll just curl up in his fleece. He'll hiss every time I move or disturb his precious beauty sleep lol then throw me a death glare and curl back up again.