The fastest way to get Kpop tickets?

Hey, I'd like to ask how to get tickets for Kpop concerts quickly, or rather, the best tickets. Almost every concert here in Berlin sells out the best tickets or almost all of them within seconds. Tickets for the Blackpink concert in 2022 and the BTS concert in 2018 also sold out quickly. There's an NCT Dream concert in Berlin in April, and I'd like to get standing room tickets or upper tier tickets. Do you know how to get them quickly? (I get most of them from Eventim, by the way.)