yes , i have noticed that i lose games due to one of or all of following reasons:
1. blunder
2. hanging the pieces
3. sometimes getting a position that dumbfounds me . i dont know what move to make
4. making the move without checking its safety
so i can say that we beginners are plagued with BLUNDER ILLNESS
When I analyse my games I often see a lot of blunders in the end game where I (for example) missed a forced mate, but still went on to win anyway. On the other hand, just one careless move early on often loses it for me. Maybe something similar is going on with you?
Your basic problem while reading the question title is that you focus on the idea that you have to win. In the end everything is all about to win. But starting out its better to learn and then it doesn't matter the outcome ... but you've learned from the mistake. Actually this is common with so many other things.
... Can an opponents blunder make you blunder yourself?
Yes. Even in games between stronger players, it's remarkable how often a bad move is answered by a bad move.
One possible explanation is that a bad move breaks the logical flow of the game, and the opponent doesn't always immediately re-orient themselves, in the new situation.
Can an opponents blunder make you blunder yourself?
World Championship 2015 Carlsen's Kd2 (was it?) where Anand missed the winning opportunity. He said later that when you don't expect a gift, you don't always accept it. 
Looking at my analysis report. I rechecked my blunders and pressed best move button. I hate to say it but I would have been down good material. Blunders are based on what a computer would play but I'm not a computer so blunders are good in my book. You can't predict them it's our human advantage.
Blunders your opponent does not take advantage of can be winning.
Looking at my analysis report. I rechecked my blunders and pressed best move button. I hate to say it but I would have been down good material. Blunders are based on what a computer would play but I'm not a computer so blunders are good in my book. You can't predict them it's our human advantage.
Very interesting. Can you show an example?
Hi all,
I'd like to open up a bit of a discussion around the above topic. I've noticed a bit of a pattern with my own games and it seems to be that the majority of games I win are full of blunders (anywhere from 3 to 8) and generally those that I lose quite often have very few (0-2). This is from both players, not just myself. So my question is, what does this say about my game? Is this at all common with beginners? Can an opponents blunder make you blunder yourself?
Any thoughts or advice appreciated as always.
Many Thanks