Let them breathe
Alternatively you could place the mushrooms in the big bowl to let them breathe and cover with a cloth bag or a paper towel
Don't wash them immediately
Not washing mushrooms prior to storing gives them much longer shelf life and prevents them from turning slimy.
Mushrooms can be frozen in their raw state. Once you thawed the mushrooms cook them straight away. Do not freeze the thawed mushrooms again. You may freeze the sautéed mushrooms in an airtight container and store them in the freezer for up to 30 days