Buying Orbs and 5* heroes

Dumb luck.

I don't know, my friend said he got the $13 pack and pulled a Winter Lissa and Winter Tharja from it. I ALMOST bought some for SCorrin but even if I had, only 21% chance at her with the $20 pack. And that's assuming you'd get a Blue, which half of the time I don't even get at all, so Green pitybreakers galore. Hence, I found it more valuable to wait and simply remind myself to have a cushion of 150 orbs for when she returns.

Dumb luck. Some people have claimed the opposite.

Just luck, i spent around 500€ in this game and i fell like i pull more 5* with f2p orbs rather than paid orbs

I elect that there's no correlation; I spent 200 p2p orbs on the Christmas banner and all i got (from those) was a +Res -HP Cuntdelia. Okay.

BuUuUuUTT like 5 days later, after some BS orbs i got from tempest trial, i did a BS full circle summon on the banner, not expecting anything. POP! Winter Lissa and Winter Robin came home from the same circle

Definitely dumb luck, but I've had the same experience.

I buy orbs sparingly, but only once did I get a 5* immediately afterward. And it was a 5* that I wanted, no less!

So yeah, definitely luck.