Have you failed if your conclusion does not match your hypothesis

Absolutely not!
Your hypothesis is your educated guess on how the experiment will go. If in the end of your experiment, you find that your hypothesis was not supported, that does not make you wrong.
I hope this helps!

No, your hypothesis is just your guess or estimate of what you think is going to happen or what the result is going to be after you complete your experiment. On the other hand, a conclusion is what actually happens after the experiment has been conducted. Your hypothesis can be incorrect, but in your conclusion, you will explain what happened, why it happened, and why your hypothesis turned out to be incorrect also explaining why you guessed what you guessed would be the result in your hypothesis. If you get what I mean. Therefore, it is ok to have a different conclusion and hypothesis but make sure to explain your answers, your guess, and your results.
Hope this helps!