puzzle rating to rapid rating

As of the time of this writing my puzzle rating is 3022, yet my rapid rating is only 1385. Both are my highest so far. According to this study: https://www.reddit.com/r/chessbeginners/comments/l4z6mw/correlation_between_your_best_puzzle_rating_and/ your rating should be at least 1400 with a puzzle rating of 2000. I have 1000 more points than 2000, yet I don't have at least 1400. Not only that...plus I checked the statistics of the average highest rapid rating of someone with 3022 puzzle rating and it was 1950+. Half of them had 2000+ rapid rating. The highest had 2400+. Considering that the average is 1950+, why is my rapid rating so low?!

Puzzles usually help you with end game, so you might need to improve on your early and mid game.

I agree. I have only studied openings and puzzles, so you guessed right. So my mid game and endgame I should strengthen.