It is kinda ambiguous as many times they sometimes say it is just the sun's rays involved in the powers now. However nothing has contradicted it yet. Plus it's not like any human has set foot on Krypton aside from Clark's fantasy that it happens in For the Man Who Has Everything.

Come on, lag. That's a show, not a comic, separate canons!!

It still happened.

Whatever the Krypton show does is not relevant to comics.

In reality, both Superman and Supergirl have visited ore-desteuction Krypton several times: Superman's Return to Krypton, Last Days of Superman...

Anyway, Krypton's gravity varies depending on the story. It is an ambiguous matter.

I always assumed Adam was doing it using his Zeta tech. Though yeah, for the show, it probably was just the sun.

Krypton gravity was always a weird thing to me because if it's over 10x the gravity of earth shouldn't superman not be able to walk always bouncing around like humans on the moon

He controls it given the levitation abilities the sun's rays give him.

Yeah but depending on the continuity he couldn't fly until he was a teenager or his early twenties so before that how does he walk like a normal person

Some versions had the flight be uncontrollable in his youth. It really was Smallville that enforced a policy that he couldn't fly in his childhood.