Good day. Cards for buying TikTok ads can be issued on the website of PSTNET service
https://pst.net/cards/tiktok, so visit the site and learn everything in detail there. You need to go through the new customer registration, enter all the data correctly and issue your first card for only $10. You can get 100 free cards every month and I am sure that will be enough for you. Go to the website and read all the terms and conditions there