Helo sara,
It is understandable. I get that. If you have deleted your old tiktok account, you can set up a new tiktok account and start over. Normally tiktok doesn’t delete an account. If you don’t follow tiktok policies you might get banned for a while, although you can ask tiktok help center to unban you by convincing them that they have made a mistake. I assure you that tik tok doesn’t delete an account especially with no reason.