I Don't Win, Rather Opponent Loses


Like here. Look at from move 11 to 14. I threw away a clear advantage here. Because I had no idea what I should do after move 11 when all the developments were done.

Why yes we all win games because our opponent made errors. And lose games because we made errors. If neither side makes errors, the game will be drawn.
And yes, after you are fully developed, you have to look for a plan. Thats when strong players spent their time.
And dont worry if the plans are not always optimal; a bad plan is still better than no plan.
P.s.: Either way this was a good game and you won.