I consider every time I play an opportunity to practice. There will always be a bigger moment, so you may as well take the current one to grow accustomed to battling through the fear of failure. Which is the whole point in practicing to begin with...lol
I equate this to the likes of Jordan "wanting the ball". Don't shy away from the moment. The risk/reward percentage on shot selection doesn't change based on the magnitude of the moment and/or who you're playing. However the amount of sweat sure changes for the uninitiated.
If that's your level, no argument from me. One should always learn or evolve through experience. Fear of failure is just one element. Some have none and just go for it. If they had good footing to start with then they'd have a string of positive experience and nothing credible to worry about. Filler and Shaw come to mind. As far as it being practice, well a couple months of 1K sets might be considered precursory to um real scores lol. I wouldn't know never been and not likely to be.