Tiktok is not both related to youtube and a program.
All video applications are software. All YouTube-related applications are video applications.  An APP is either related to YouTube or Instagram. All Instagram is entertainment.  All software is programmed.  All entertainments are interesting. If something is interesting, then it is good. TikTok is not good.
∀x (App(x) → Software(x)) ∀x (Youtube(x) → App(x)) ∀x (Youtube(x) ∨ Instagram(x)) ∀x (Instagram(x) → Entertainment(x)) ∀x (Software(x) → Program(x)) ∀x (Entertainment(x) → Interesting(x)) ∀x (Interesting(x) → Good(x)) ¬Good(tiktok)