Setting aside the semantics about what constitutes an 'experiment', constant failure due to minutiea you didn't consider in your technique is what actual science looks like. It is deeply frustrating, but it's the nature of the beast. And it's how you learn, and become a better scientist.

It's the difference between writing pseudocode that vaguely looks like it does what you want, and having an actual, executable program that works as intended. The devil's in the details.