Or, for those boring old manual clocks, you will have to put them forward an hour yourself. Alternatively, feel free to save time now and manually add an hour in your head every time you check the time, then after a few weeks get around to actually changing them, then spend a few weeks confused about whether you changed them or not and if you still need to add an hour and checking the time on your phone to make sure.
It’s not something where you can attribute a particular case to DST. It’s more like climate change, where we know from overwhelming evidence that it results in an increase in problems overall, but not which specific instances wouldn’t have occurred otherwise.
Specifically, it leads to notable spikes in traffic crashes, heart problems, and suicides, among other problems. It’s been quite extensively studied from a variety of angles, and all of them come down on the side of DST being problematic. Here’s a handful of them:
I’m particularly a fan of the penultimate one linked there, which states:
Doesn’t get much clearer than that. I have to admit to being surprised at it though, because until I learnt that I actually had advocated for the possibility of permanent DST in some areas.