Jude, excellent work on this one. This is a tough subject and you handled it with sensitivity. I think part of the problem in getting accurate data on this subject is we have to rely on self-reporting. And let's face it. Women are more likely to admit that they are lonely for the same reason that they are more likely to go to therapy.
And for the naysayers claiming your data is cherry picked, that's totally unfair. Cigna Group's research is solid and that poll had over 2000 respondents. Here is a meta-analysis that found the same stats: https://www.researchgate.net/publication/337213992_Gender_Differences_in_Loneliness_Across_the_Lifespan_A_Meta-Analysis