What should i buy in steam or fortnite?

So I'll get 15 euro paysafe tomorrow I don't know what to do should I run something in steam or in fortnite? I just don't know

Why buy something for cramp? You don't even know what you want.

Steam… Just have a look in the shop and maybe some offers on Steam.

If you still can't find anything good, you can still pretend to be in Fortnite

Save the 15 euro until there's either a nice game in steam or a cool skin or something like that in Fortnite. You don't have to shoot it out without knowing what for