A very small subset of middle aged white men hold any power(in predominantly white countries). Most of us are just trying to get by

Given what we know demographically about middle age white males (that they're relatively richer, more powerful e.t.c. than their peers) you can make some useful inferences about what doesn't work to decrease suicide risk.

While there are probably many reasons for this a personal theory of mine (without any firm backing) is that Borderline Personality disorder is underdiagnosed in males.

People with BPD are at a significantly higher risk of suicide, but very effective treatments exist namely dialectical behavioural therapy: a collection of emotional management and mindfulness exercises designed by a psychologists with BPD. The diagnostic criteria for BPD however, are heavily weighed towards symptoms associated with female socialisation. Even the treatment materials assume a female patient, which while not making them less effective is probably a hard sell to males in a sexist society.

We should not compare the magnitude of suffering based on race, sex or sexual orientation. That is how you divide people. That is how you alienate them. Telling those depressed white middle aged men that by default they have it easier because of history or because people at the top are usually white male might be one of main reasons they commit suicide the most.