Yes, you are wrong. Trump took hydroxychloroquine briefly as a preventative after being exposed to someone with the virus, and he did not get the virus then. Many months after he stopped taking HCQ, he did get the virus. By that late stage, other better treatments were being developed so he focused on that at the time.
At the point when Trump first mentioned HCQ, there were already two in vitro and one in vivo studies showing that the drug helped prevent extra damage from the virus, and it was already being used as a first line treatment in many hospital systems in the US and around the world for the coronavirus. The left-wing media, however, immediately tried to politicized the drug and especially highlighted one bogus anti-HCQ epidemiological “study” in the Lancet that was soon after withdrawn for not meeting the normal standards of the journal. They tried to do all they could to discredit it because Trump said it looked promising.
More recently, beginning in January there have been a series of well-respected medical journals that have released long-term studies showing that HCQ does indeed help treat COVID-19. The drug is of course dirt cheap and overwhelmingly safe (in fact, in many countries it is an over-the-counter medicine).
With respect to the studies, it appears that you are providing misleading information. And frankly if it was as great as you say, why didn’t Trump keep on taking it after he got the Covid-19. We all know why.
not to mention the democrat black woman who got covid, and was able to get HCQ because she was failing, but had to go through others to get it- it saved her life- she later came out and thanked Trump for telling her about it-