@TacTicIsTicTac I agree. Often the game is won in the midgame.
But also that's where (I suspect, don't know the statistics) that most mistakes are made?
But to study a midgame, with all those different possibilities.
That seems like a waist of effort, because of all those positions. Often a move is relative to the current board.
Also, endgame studies, shows you how to reach those endgame positions, that you can learn how to win.
If you learn an opening well, you will be well prepared for the midgame, and if you don't blunder, you have a decent position in the end game.