This study looked specifically at plaquenil in early COVID-19 and found no benefit. I posted it with the other 1/2 dozen a while back, along with
this study that looked at people with just mild/moderate disease. Neither showed any benefit. I've posted these a few times by now.
Seriously, read the articles I linked. I know they're kind of dry and may be hard to understand if you don't read papers like this often, but they are the pure, 100% unfiltered (by a media outlet) results of two well designed clinical trials. You don't get any closer to the source than that. They will give you far more accurate information than any news media outlet, and they will tell you with explicit detail exaclty how they arrived at the conclusions they did.
You can always post here or shoot me a PM if you need help interpreting parts of them, but it really would be worth the effort for you to try to read the papers. If they aren't publicly accessible I can download them via the university library and host them somewhere.