Friendly reminder that the "male loneliness crisis" is purely an American phenomenon and it's probably due to the fact that 71.6% of all adults aged 20 and over are overweight, including obesity. The number is almost evenly distributed among the genders with slightly less women being overweight & obese. This leaves only a small number of just 28.4% of women aged 20 and over who are even dateable and that's also not adjusted for age, meaning this number includes old hags and grannies.
But let's look at this in more detail: if you want a white girl that is between 18-27 years old, one that is not married, has no children, is between 5'0" and 5'10", and who's not obese or overweight - that leaves you with only about 2,370,000 women in the US, that's just 0.7% of the total population. So unless you have a deranged hamplanet or granny or milf fetish (which the vast majority of men has not), chances that you find a fertile girl in the US at a healthy weight who's also single, are very, very small.