Question bans are on a per-site basis and are based on your asking history on that site. Your reputation on Stack Overflow has no bearing on your standing here, where you have asked 3 questions (here, here, and here for you and 10k+ users). All three have a net negative score, two were closed, and all three were deleted. It's not surprising that this triggered the automatic question ban, which are described in detail in the Help Center and in this question on Meta Stack Exchange.
If you're interested in participating here, I would recommend that you read how to get a question ban lifted as well as better understand what is and is not on-topic here (which is pretty clear in our Help Center's on-topic and do not ask pages. If you aren't interested in working to get your question ban lifted, then yes, finding an alternative is likely your only option.