Analyzing average centipawn loss by game phase

I'm trying to find my weaker places by using Chess Insights.
I've noticed, that my average centipawn loss by game phase is looks like this:
35 for opening
101 for middlegame
77 for ending

Does it means, that I should first of all work on middlegames/endings? Or it is normal to loss more on middlegame? Do good players have roughly equal average centipawn loss during all game phases?

Interesting question - on the same measure I go 19/54/51 for blitz and 16/36/33 for rapid, so the same profile.

I feel it should be normal to lose more on middle games, the positions are more complicated. Endgames it might vary depending on how many of your games get played to mate.

I think that the middlegame should have the highest ACPL.
In the opening you usually follow theory and therefore play moves that you know are good.
In the endgame the game could already be decided or a dead draw, which can result in moves being played without losing centipawns.

Also, my stats are 23/60/40 in rapid and 28/73/61 in blitz, probably because I'm not that solid of a player.