If Trump wins and does a good job in his second term then I will gladly support him if he wants a third term. There might be a way around the 22nd Amendment by nominating a puppet Republican nominee and putting Trump in as VP and market the ticket as Trump's 3rd term. Then if they win, the President resigns, and Trump takes power. This would likely have to go to court because the 22nd Amendment talks about being "elected" specifically but not necessarily the office itself.
If Trump wins and he likely will Republicans will ignore the 22nd amendment and nominate him for a third term if he wants it.
We live in interesting times. We’ll have to take a look.