Fortnite skins gone after a long time?

Have gambled fortnite again after years for fun. (the last time chapter 1 season 5). Now the problem is that all I had is gone Had bought the season 4 battle pass

do you know how I get it all back?

In fact, there's no way the skins could have disappeared.

Could it be that you're playing on PS4 and don't have an Epic account linked to it or have signed in with a different account?