No, you can’t participate in the yelling out your thoughts at max volume system privately.
Social media is public. What you post or reply to is public. Even unexpected metadata about your interactions is public.
You can’t use social media without being social and sociality is by definition not anonymous. Anonymity is antisocial.
You can’t stick your hand in the hand grinding machine safely. It’s meant to grind hands that are stuck in it.
If you’re scared, go to church.