Taming hamsters can be a long process.
We have four a the moment, along with five mice and two multimammates.
Of the 11, only four can be handled easily. And we have had them all at least a year.
You can either use the tub, a ball-pit style playpen or a eugad style playpen (search Amazon for eugad playpen). Alternatively, you can let him free roam.
Most important when it comes to taming is to ensure that his environment is not stressing him out.
He will need
An enclosure minimum 8050cm (preferably 10050cm) of uninterrupted floorspace, minimal levels as hamsters aren't really climbers.
a 28cm wheel
preferably 30cm deep (or as close to as possible) appropriate substrate (clean and cosy, teabag bedding, carefresh, megazorb, aspen, hemp, allspan, chipsi classic are all safe)
A sand bath
Alternative substrates for scent and texture (Coco husk, Coco coir, a couple of the ones above)
Lots of hidey places - cork logs, birch logs, platforms hat he can burrow under, etc.
This should make him feel confident and reduce the risk he is stressed.
Placing an unscented tissue down your sleeve/top/bra for the day, and then place this in his enclosure in the evening. This will help him get used to your scent.
Use a mug, container or snuggle pouch to get him out and then let him climb over you.
Try not to offer treats through the bars, only ever directly from your hand in/out the enclosure. Find natural treats like flax seeds and meal worms (not too many mealies as they are high calorie), rather than store bought.
I'm very glad you said you're not getting a wheel. They are very dangerous and stressful for hamsters. They cannot see where they are going, are unable to get out and their little paws can get stuck in the holes.
Most of all, enjoy your little one even if they remain look a don't touch hammie (but I think with patience they will be tame).