I'm wondering why a whole sequence of this game was not analysed (move 13 to move 32). I can't believe that there were no mistakes in those moves.
Why is that?
Game analysis on lichess is set to use two seconds of Stockfish' computation per move. According to that much computation, it deems those moves played as optimal.
It's not that, it's because computer analysis is beyond caring if you've made a mistake or not. The advantage is already beyond +10, so you might be making an error that changes the evaluation from +30 => +15 -- it's already a clear win.