What happens if I run out of free margin?

If I'm trading with borrowed funds in cryptocurrency, and I find myself with no free margin left, what consequences can I expect? Will my positions be automatically liquidated? How much time do I have to react before that happens? Are there any steps I can take to prevent this from happening in the future, such as managing my risk more carefully or increasing my deposit? It's important for me to understand the implications of running out of free margin and how I can navigate the situation effectively.