The REAL reason behind the low critic scores
Official critic scores are calculated based in the percentage of non-white people in the movie poster. You think I'm kidding? Well, let's check, the formula is:
Score = 60 + 0.4 x percentage of non-white people in poster.
You just need to check the percentage of non-white or hispanic people in the movie poster, compared with the Rotten Tomatoes score, which you can obtain with a 5% error using the previous formula:
Black Panther: 100% non-white people. Calculated score: 100 - RT score: 97
Deadpool 2: 50% non-white people. Calculated score: 80 - RT score: 82
Infinity War: 50% non-white people. Calculated score: 80 - RT score: 83
Han Soylo: 40% non-white people. Calculated score: 76 - RT score: 71
Jurassic World FK: 0% non-white people: Calculated score: 60 - RT score: 61
The easiest way to get the critic praise the movie as the new Citizen Kane is just to swap the people in the movie poster and use black ones. I'm not sure how the dinos would affect the official critics, but just in case, make them black too.