You can use the recently discovered radio commands to send fake messages about unboxing cases : r/GlobalOffensive
How to disable and mute radio commands in CS:GO - ProSettings.com
CS:GO Extended Radio Menu with New Commands (2022) – Forever Alone
Using cmd to play hidden radio cmd while not intended makes your have extremely loud sound played · Issue #1388 · ValveSoftware/csgo-osx-linux · GitHub
Steam Community :: Guide :: [HOW-TO] Use the Hidden Radio Commands (works in multiplayer)
How to Use Old CS:GO Radio Commands - All You Need to Know
How to Use Old CS:GO Radio Commands - All You Need to Know
Steam Community :: Guide :: Hidden Radio Commands
Radio Commands in CS:GO - How to Use
secret voice commands in cs:go (how to #3) - YouTube