You've tried taking over the counter sleeping medication but you don't want to depend on or can no longer rely on them to fall asleep.
You've tried exercising.
Exercise is excellent for your health; However, vigorous exercise in the evening may lead to an increase in dopamine and norepinephrine, which can get in the way of sleep.
And counting sheep has never worked for anybody.
"The single best predictor of daytime performance
is the quality of the previous night's sleep."
“Sleep: Neurobiology, Medicine, and Society.” Coursera. Accessed 07.05.2021. https://www.coursera.org/learn/sleep.
Studies have shown clear connections between sleep deprivation and obesity, heart disease, depression, an acceleration of overall brain aging, impaired immune function, and decreased cognitive function.