1. https://www.washingtonpost.com/business/more-young-americans-are-dying-but-not-from-vaccines/2023/01/19/b6a52af4-97f3-11ed-a173-61e055ec24ef_story.html

"What the mortality data show is that, first of all, something has been killing American young people in sharply rising numbers lately. The 2021 mortality rate for those 15 to 34 was the highest since since 1973, and for those 25 to 34, it was the
highest since 1950.

That something, it should be clear from the chart, is mostly external causes such as accidents (including accidental drug overdoses), suicides and homicides. Still, there has been an increase in deaths from internal causes, too.
...
Here is what those deaths for internal causes look like on a monthly basis through May 2022.

The increase seems to have started in late 2019, before Covid is thought to have arrived in the US. It was initially driven mostly by an increase in deaths from respiratory diseases, so maybe Covid got here earlier than thought; maybe it was the flu;
maybe it was something else. "

2. But no pneumonia and flu death spike for the same period. https://rightwirereport.com/wp-content/uploads/2020/05/Pneumonia-Chart.jpg

From 1 and 2 above, increase in deaths from respiratory diseases started in late 2019 could be attributed to Covid-19 in the US earlier than thought and/or something else.

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