We all have days in which we don't perform well. Just needs to be a bad mood, a lot of stress or something like that and it drags your performance down. In Apex Legends, this is a match-to-match basis. In one game I'm performing extremely well, in the next one I'm terrible despite not changing anything on the way I play. This has been going on for weeks and months now. Something has to be going on. Whatever it is, it's screwing around with the consistency.
I'm not just saying something either. I have several friends with similar issues. No doubt a better player will be better and potentially beat me. But the differences between games are radical. It's either me shredding the entire enemy time with double/tripple kills, or the enemy team tears our team apart with zero cares given. I wouldn't be surprised if some of them play with their feet instead of their hands with how terrible my aim is at times.