Thank you for reaching out. Can you please elaborate on the symptoms you are experiencing?
Then the answer to your question (I think) is "no". Note 9 is an extremely reliable device!
The Note 9 was the phone I had no intention of buying... I was happy with the Note 8. But the upgrades, including the Bluetooth S Pen, were worth getting. I used it for a year and a half, until I got a deal on a Note 10+ that I couldn't resist. The Note 9 never gave me a problem: fantastic phone!