I encountered the same problem when I wanted to download tiktok video without watermark – most services either spoil the quality or require the installation of dubious applications. After several attempts, I found Snaptik – a convenient tool that allows you to download videos in their original quality without logos. You just paste the link, and in a couple of seconds you get a clean file. It works stably, without ads and unnecessary hassles. I have been using it for a long time, and have had no problems, so I can safely recommend it.