Cannot get PM interviews at Google anymore. Is there a blacklist?

I interviewed at Google last year for a PM position in GCP and made to the final round. Unfortunately didn’t make the cut. Feedback was that product sense and business were strong but I didn’t not have enough tech depth. I waited 12 months and I applied again through a referral. this time I didn’t get the interview for any of the 3 positions (PM related) I applied for. I got another referral and applied for other 3 positions and still didn’t get any interview. It has been now 6 months and I am really struggling to get any traction. To the recruiters out there, is there some sort of black list and is it possible I am in it? For reference last year I got the interview through a referral and it took just a couple of days to ge the interview. Should I just give up with Google and move on? #pm #Google #productmanager #recruiting