When it comes to camera tech these days, one thing that we need to be sure of is reliability. When Gavin Hardcastle (Fototripper) was at an iconic location in Ireland, the worst that could possibly happen happened, and worst of all, he didn't realize it until he was back at home and had no chance of retaking the shot.
In this video, Gavin shows exactly what the problem was with his Sony a7R IV, the resulting soft image, and some key tricks to get it working again. Should you be a Sony user, then knowing that this issue exists and having a way to fix it will come in handy. Failing that, you get to witness some incredible footage of a stunning location.
So, check your Sony and see if you have the same issue. I really hope you don't, as it wouldn't be a nice thing to happen to anyon. However, it might explain why some of your shots were out of focus.