Dowidat first joined Borussia Mönchengladbach as a fourteen-year-old, and spent the next five years in the youth setup, followed by three playing in the reserve team. In July 2012 he signed for Preußen Münster of the 3. Liga, where he made his debut on the opening day of the 2012–13 season, as a substitute for Benjamin Siegert in a 2–0 win against Wacker Burghausen. He made eight appearances in the first half of the season, before returning to Gladbach in January 2013. After a further six months playing for the reserve team, he signed for Alemannia Aachen.