From my anecdotal experience these tests are no better than guessing. Plenty of people around me got sick and thought they have cold. Testing every day always negative. One person got considerably worse and had to go to hospital, rapid test still negative at hospital. The PCR however came positive. Now, because the hospital gets paid extra for treatment of Covid patients, we still don't know if that person really had Covid and hospital just faked the result to collect money. Apart from that one person, everyone got better after a couple of days. The unlucky person needed few more days but is fine as well now.
Hospital discharged him and said to come back if he gets considerably worse and was told to take acetaminophen.
Total joke.