This happened to me with LinkedIn (during a job search!) when my phone that had 2FA on it stopped booting entirely (Pixel 3a). Support had no reason they wouldn't simply contact me via the contact methods on my profile to reset 2FA, so I'm in limbo right now.
To be fair, they want me to email pictures of my driver's license to recover the account, which they pinky-promise they'll delete afterwards. I'm not willing to do that, given I didn't have to provide any ID to sign up in the first place. So now I'm looking into having this form they sent to me notorized so I can get access back. What a mess.