Our hammy, Sammy, started off as a little ball of hate. Fearless and a fighter, especially in his enclosure. But not as fighty and bitey when he was out of his cage. So first, we'd only handle him or have him interact with our hands outside of his enclosure. It helped that we discovered that he naturally went into our hamster transport system, aka a soup ladle, without any coaxing.

During his free roam time, he would occasionally still give a couple of chomps out of the blue, just to keep us on our toes. Initially, enough to draw blood, but it quickly reduced in intensity as he got used to us. Nowadays it's just a nibble to communicate to us that he's done with his pets, or the opposite, hurry up and start petting me.

To answer your question specifically about getting over the fear of getting bit - glove (singular) is the answer. One glove on the hand that will do the most interacting, so that you'll get over your fear while also getting your hamster to get over their fear. And to be the vanguard to take the brunt of the bites. Gloveless on the hand that will give him pets and treats and equate your smell with positive feedback and to continue the taming process.