i am from italy and here socials are splitted like this:
- people above 40 years -> facebook
- people above 20 years -> facebook a little & mainly instagram
- people under 20 years -> tik tok
that's how population is spread generally speaking, youths want immediate and often dumb content so they go on tiktok and think facebook is for elders, more aged people find tiktok retarded so stick to facebook and instagram