every mistake must be corrected, big or small, you have to fix it because of the mistake. Big things are normal, but don't consider small mistakes. If it's trivial, it could be that with that small mistake, we are even more devastated, therefore improvement is very important here, don't be too lazy to make improvements when you fail or you MC, you see what caused you. You will find the MC first. Later, when you have found the cause, you will evaluate it. Practice again. If possible, you can replace it with a new technique