Why does President Trump's approval ratings continue to rise ?

https://www.ft.com/content/c7f5a8bc-eb0e-45e5-a080-bbfd6d317def

https://www.bloomberg.com/opinion/articles/2020-04-02/donald-trump-s-approval-rating-is-holding-up-for-now

https://www.wired.com/story/political-science-behind-trump-approval-ratings/

https://www.vanityfair.com/hollywood/2020/03/trump-coronavirus-press-conference-ratings