Good Advice: Never make a New Year's Resolution on the last day of the year. You know that the very next day - New Year's - you haven't seriously commit yourself to that bad habit you were going to break.
Meaning, hard habits are really hard to break.
I read online somewhere, that you will still be able to have Tiktok. It will only be removed from the App stores. Then gradually faze out the site itself later. So, you have some time to get on the site. It won't be completely offline on January 19.