I have a bunny who won’t clean his butt. He IS a lazy bunny, but I don’t think laziness is the reason for his faulty butt-cleaning skills. Fat rabbits can have trouble reaching. My bunny isn’t fat though, so I don’t know why he won’t clean his butt. But since I changed his diet and excluded f ex carrots completely, his butt is almost always clean now and when it isn’t, it’s just a little stuck poop that can easily be picked out of his fur.
I’ve started giving him a dietary supplement for humans, a probiotic called lactobacillus plantarum v299. It’s nothing to do with milk, bunnies should not get probitic yoghurt etc. I’m taking this supplement myself but I take a human dose, Bam just gets a little amount now and then sprinkled on a wet leaf. There are other probiotics that may help a bunny tummy.
The skittishness sounds perfectly normal to me. When a rabbit hears sth that scares them, they don’t stop and think “Hey, wait a minute, that’s probably just mummy I’m hearing.” Because if a wild rabbit didn’t run as fast as it could the moment sth scared it, it would be somebody’s dinner very soon. That instinct is their main survival tool. It may look like the bunny is looking right at you, but they actually see better from the side than from straight ahead, most prey animals’ vision is like that.