I was actually never trying to claim that white wins by force but rather that he is significantly better and therefore 6... dxe5 would have been preferable imo. Games played with fast time controls usually contain some mistakes but overall I think this was strong performance from you.
I must say that I really like how you present your games by showing your thought process during the game in the comments and also make honest evaluations about what you did well and what parts of your game need improving. I believe this kind of approach is one of the best ways to improve one's game.
I have to say that working on my endgame and learning which endings I'm able grind out endgames has been the biggest single thing I've done to improve my game. It's an invaluable skill.
The knockout blow isn't always going to be there, and being able to recognize when a winning endgame conversion is has really changed the way I play the game and allowed me to make the decision to simplify with much more confidence and to convert many more games than I would otherwise have been able.