Source? There has not been a statistically-significant increase in middle-aged male suicide rates between 2023 and 2024 confirmed data [1]. (2025 breakouts aren’t out yet, but top-line data show decreases.)
In 2025 in the UK men age 45–64 had a suicide rate of about 24 per 100,000, which is the highest it has been in the past half century, and is higher than other age categories. In the mid 2000s, the rate was like 17 per 100,000.
From your link, in the USA the overall rate for men of the same age is about 30 per 100,000, but varies dramatically between states.