In fact, Europeans and British can positively say that FB had a substantial life changing impact due to personal data misuse and political manipulation.
It's one of the core reasons most Europeans would like to see their data protected and Tech giants held accountable. Be it American or Chinese or another one.
You might argue about EU/US alliance and say that CCP are the devil but the fact is, US is documented to spy on scale, have spying partnerships with US tech giant(Google for Snowden and WikiLeaks), rich history of organising coups and political movements and most importantly the political situation in US is also not stable and it's quite possible for Americans to elect EU-hostile president with questionable ties to Russian oligarchs like the last time.
The situation with TikTok might be a new phenomenon for the Americans but it's how the rest of the world has been living in the last 30 years.