Potty training is ultimately a process that the child must control, or else he's not trained. Because of this (sometimes unfortunate) reality, there are three facets of readiness, the third being emotional maturity. Your son may have the first two (physical/neurological and cognitive), but he apparently does not have the third.
Sometimes rewards work in the short run to overcome this hurdle, and if your current reward doesn't work, perhaps something else would. But that introduces the very real possibility that rewards/bribes will need to escalate to keep him motivated, and that is a mistake that you will seriously regret someday.
So, what I would suggest is that, as hard as this will be, you drop your expectations, tell your son you are proud of how well he's growing up, and express your confidence that he will use the potty when he's ready – when he notices that taking a few minutes to go to the bathroom will be easier for him than getting changed. And then do it. Just stop hinting, fussing, reminding, nagging, demanding, bribing, acting anxious or annoyed, or anything that you MIGHT currently be doing around the topic of potty training.
Little boys frequently don't pull it all together until 3.5 or 4. When those three necessary elements are in place, he will decide to do it, and it will probably not take more than a few days at most. Kids WANT to make this developmental step when they're ready, just as they want to walk and talk when they're ready. And your son just MIGHT notice he's ready when you back away and give him space to work it through for himself. Or he may need a few more weeks or months.
You will probably not "convince him" to want what he doesn't yet want. But you can continue to make all your messages about using the bathroom as positive as possible. That can include modeling how easy/quick it is for you or Daddy, reading potty books or watching potty videos, having his toys/stuffed animals role-play pottying, and in general making a game of it. With my grandson, once he would go but didn't want to take the time, I would go into the bathroom and begin forcefully ejecting all the dinosaurs that were taking up all the space and sitting all over the toilet seat. My grandson couldn't resist that game, and would come in and help me wrestle the beasts, and claim his spot on the toilet.