You have two deleted questions, one heavily downvoted. From looking over your profile, this does seem like a borderline case. Meaning, you're not in too deep.
If you read through What can I do when getting “We are no longer accepting questions/answers from this account”? carefully, you will find a couple of tips for getting unbanned, including:
The only way for the ban to be lifted is by contributing positively to the site in other ways. Before you do anything else, fix your existing posts!
So you could edit your existing questions to improve them, or post helpful answers, or suggest edits to improve others' posts. I'm sure that a little positive participation would get you back on track.
