Hard to tell without context, but it sounds like you have a lot of things bottled up inside of you that may need 1 to 1 sessions with a therapist. Therapy in general obviously makes you confront the things that you may carry with you, the things you shoved in some dark corner hoping you’d forget them, but that’s of course not how it works. Your group therapy likely scratches those things and pulls on them a little, which is what causes your distress. Crying is not bad though, it’s a good way to let some of those bottled up emotions out.
Are we talking about the temperatures the freezer is freezing things down to, or the temperatures the freezer’s components are able to run at? Because those are two very different metrics and if it is the former, then that does not mean that the freezer’s components can handle those temperatures themselves.