Get rejected by HC and offered to interview for SETI role around Feb. I said I need to wait for my H1B lottery and then take the chance. The recruiter said ok and said keep in touch. Now I know the chance of getting picked is slim, and I emailed the same recruiter again, and he hasn’t responded my email for two weeks. What should I do?
Find a new recruiter.
But the previous recruiter said I only need to be interviewed 3 rounds. How could I transfer this info to new recruiter
You wouldn't, you would just reapply and get a new recruiter, and try again. If your current recruiter isn't working with you then you'll have a harder time.