Normally someone makes a case and tries to sell it to the public, congress. What's the purpose of tariffs to bring in income or to bring back jobs or to level trade agreements? You can't do all things at once and how does that work with other promises like lower prices. The lack of an overall plan is causing the issue.
If you take immigration he has a plan and he stuck to it and those are where his highest approval numbers are. Imagine he one day opens the border another day closes it starts kicking out American families the next day invites the world back in. That's his trade policy.
Get a solid plan, understand the downsides and if you can live with it stick with it and keep the personal insults out.