the opening is hard to get right. mine still stinks. a few things to think about
c11 and l2 were too small and in gote, as evidenced by the fact that B was free
to take the stunningly large points at r17 and k10
its too difficult to track the global board state and line it up with the perfect joseki choice…but after F16 you should have had a kind of ‘hey wait a minute’ moment about the size of blacks moyo and thought about spoiling it. move 21 is already getting late
i don’t track joseki very well, but i think c14 really put you in a bad spot. f17 ended up buying you nothing, and the resulting position on the left side was pretty weak.
thats all it takes to put you way behind, a botched corner and two gote moves.