Ask HN: How do you prepare to tech interview? Any tip and tricks?

Hey, I’m working as developer 8 years, and I changed company a couple times, and it was just luck every time, I ruined 90% of tech interviews, but in regular work I can do a lot of things, like invent some solutions, learn new things very quickly, but in interviews I’m absolute loser What can you advise me? How can I better pass job interviews?