Fortnite unplayable on mobile?

Fortnite is impossible on the phone, because you almost only against Pc player plays, you notice other behavior as they play, fast and build extremely fast… Is there any way that you can compete against mobile players?

Yes solo play because it fills only with the same platform (not in Arena)

However, it may also be that you play against mobile I mean it came out in Season 3

Does one say the mobile player should not underestimate everyone

As far as I know you can turn off crossplay in the settings.

Under what point is that, I did not find anything

You only play on mobile phones against other mobile players! Incidentally, you can also build fast on the mobile phone!