Yesterday I went to a training session and met someone who spoke ill of me. It spoils the atmosphere within the group. I didn't like it but could only endure it because I couldn't change groups.
Yesterday, I attended a training class and met someone who didn't speak well. I don't like it, but I can only endure it because I can't change the team.
Yesterday, I went to training. I met a person who couldn't speak well and messed up the atmosphere in the group. I felt very annoying, but I could only bear it because I couldn't change the group.