Tous le week end
English i go out at weekends. Given the fact both of your attempts are quite odd, it would have helped if you would have told what you precisely intend to say but assuming you want "I practice swimming during the weekend", I would suggest: Je fais de la natation le week-end. Open at the weekend. English Except Weekends.
Soin a la rose
Bonne chance à tous et rendez-vous à 18h! Résultats: Faustine Bollaert.