surprisingly none of your links address my claim.
https://www.nytimes.com/2018/06/23/us/politics/republican-voters-trump.html
https://news.gallup.com/poll/203198/presidential-approval-ratings-donald-trump.aspx
Trump's approval rating remains unchanged with Trump voters and independents. His ratings continue to fall among democrats, but they were never going to vote for him anyway.
You are falling for the same thing as when you predicted an HRC landslide. Overall approval means nothing in presidential politics. What matters are approval ratings in a few key swing states or even districts. And currently the same people who voted for Trump still support him.