Dont fret!
The more you do it the more he will get used to it. All hamsters are different, some are practically tame straight away, some will take a little more time. It sounds like you are doing a fab job
Hamsters are fidgets and will very rarely stay still in you hands on on your lap for long, even with the bribe or a tasty treat!
I have had Phoebe for nearly 2 years and she is such a tame hammy, never bites and will put up with all manner of kisses and forced cuddles and smooshing from me, but she still avoids hands if she can, she would rather step onto the back of a hand or an arm, and refuses to sit still, but thats just her! Other things, like funny noises and nice smells are much more interesting than I am!
After she has been handled she will often take her self off in to a corner of her cage and have a really good wash and groom for about 20-30 minutes. I always joke that she is getting rid of that 'horrid human smell'! So I am sure that yours is just doing something similar.
Just keep going with the taming and try and get into a routine, around the same time every day if you can, and you will find that hammy is waiting for you and will know that its 'out' time. It takes a little while to build up a firm friendship, but it sounds like you both are well on your way