But pay attention to few remarks: Each downloaded video will have watermark which includes TikTok logo and creators' nickname.
Watermark has bad influence on video quality.
Where can I find my video after being downloaded? How to find video link in TikTok app? For sure, you can download and save videos with a function within TikTok application.
Yes, you can use the TikTok default built-in functions.
You don't need to install anything.
Check the «Gallery» on your smartphone, if you download TikTok video on the phone.