Investigation of High School Students' Attitudes Towards E-Sports, Loneliness and Happiness Levels in Terms of Some Demographic Characteristics. - SAĞ, Samet; YAZAN, Kaan Doğan; YILDIRIM, Mehmet; AKGÜL, Fatih (Turkish Journal of Sport & Exercise / Türk Spor ve Egzersiz Dergisi, 2025)