Insight about blunders

Lol that's totally the type of blunder I would make. Always think I have a brilliant combination then my jaw drops when I see the opponent refute it in half a second

Ofcourse everyone once experienced such. Backrank weaknesses are by far the most common.

I wouldn't say that's a positional blunder, that is most definitely a tactical blunder. I make these mistakes the time too, sadly...