I had the same issue but it was drifting left, I tried all the fixes online I could find and nothing worked. I ended up trading my joycons in to EB Games and getting a new set (they didn’t even check that they worked just that they turned on so I got full price). If you still have your warranty you can send them in to Nintendo, I just didn’t because I didn’t wanna have no controller for a few days to a week and wanted to get the splatoon colored joycons anyways.