I’m not really sure that I have natural immunity from it, but I have never had covid19, as far as I know.
1) There is no such thing as natural immunity to an unnatural, manmade virus. There is recovered immunity.
2) The Qatar study does not say there is long lived recovered immunity in a general sense. They found data indicating previously infected people did not die with a 2nd infection. The people they sampled were from the Qatar population — which is 90% foreign workers — and thus are working age. Not elderly. Their samples did not die because they are young, not because of any previous infection, and they carefully note that it is data not applicable to other countries with a larger old age population. They explicitly say this in the text. But people with agendas did not read it.
3) There is entirely too much right wing and left wing cherry picking of data. This instance it is right wing. This study does NOT say what is concluded.