I think the first team to be relegated from the Bundesliga is Holstein Kiel. They are a very weak team, especially their defensive line is very weak, they concede a lot of goals in their goal. They lost 2-4 in front of Frankfurt in the match that just ended.
They got 1 point ahead of Bochum last week, but Bochum is also a weak team. If they continue like this, they won't even get 15 points until the end of the year.
Holstein Kiel is a promoted team and about Bochum the truth is that last season Bochum finished in the bottom three, but Bochum still managed to stay in the Bundesliga this season through the play offs. Thus, it doesn't seem surprising that Holstein Kiel and Bochum are the bottom teams this season that are likely to be relegated. But even so, at least I also don't want to judge them too quickly but anyway, the reality is that they are really weak in defense.
Because of course, with a weak defense and not being able to consistently score goals, which means they are also weak in their attack, it will be difficult for them to get out of the relegation zone. After all, so far Holstein Kiel has been the team that conceded the most and the difference with other teams is that, although other teams also conceded a lot but other teams were able to score a lot of goals too. It is difficult to compete in the top division of the domestic league, so if they are unable to survive and compete well, then their chances of relegation are still possible.