Anyone else have moments where when ur doing good ur really killing it but when ur struggling ur really struggling?

I swear there are times where I do presentations or practicals where I feel like i am doing everything right and am just in my bag. Like I absolutely killed some of my recent MsK practicals, but then there are times where I just am not in my zone and my performance is an absolute abomination. Like I feel like at my best I’m one of the top people on my cohort but at my worst I’m lead dead last.