Ten Hag must quickly turn things around by winning their next match. I think Leverkusen still has high hopes of finishing in the Champions League places, as the season has only just begun, and that still seems quite realistic.
Leverkusen will face Eintracht Frankfurt in their next match, and no matter what, Ten Hag must secure all three points. Leverkusen has a slightly better chance, as they will be playing at home. Ten Hag should not waste another good opportunity to secure his first Bundesliga win.
Eintracht Frankfurt is a fairly strong team in the Bundesliga, and they will likely become even stronger this season, having won their previous two matches. Therefore, I'm not confident that Bayer Leverkusen can win if their next opponent is Eintracht Frankfurt, who are currently in second place, just behind Bayern Munich in the standings. It seems Ten Hag will have to work hard for that, as a tough opponent will be coming to Leverkusen's home ground next week, and he will need to get a good result to aim for three points at the start of the season.