Private sellers do not have multiples of new items, so no need for variations.
You are clearly an unregistered business, upgrade before ebay force you to.
Ebay & HMRC are cracking down.
https://www.ebay.co.uk/help/policies/selling-policies/business-seller-policy?id=4710
More steps to address false private sellers
At eBay, we are dedicated to ensuring a fair and equitable marketplace for all business sellers. To achieve this, we monitor trading activities, and we’ll continuously help business sellers using a private account to transition to a business account, or restrict selling activity as necessary. In addition, we’ve reduced the number of free listings available to private sellers.
