TikTok - “massive-scale invasions of children’s privacy”

[l0st]

That would explain why TikTok pushes so hard for users to install their app instead of viewing it in a browser

No doubt although most modern web browsers aren't much better.

You've got what:

Chrome - Google Spyware
Firefox - Paid by Google to install spyware
Brave - caught red handed selling user data
Opera - Has always harvested user data, its their whole business model
Edge - Chrome with an MS UI slapped on it

If you really want to get away from the tracking you've almost got to use one of the oddball browsers on Linux that uses its own rendering engine and isn't funded by any of the big entities. They exist, but they're typically feature incomplete.