what is my airplay password? i never set one up. it’s also not displaying on my tv like every article says its supposed to. there’s also nothing in iphone settings about an airplay password.

From If you're asked to enter an AirPlay password on Apple TV - Apple Support:

If you see a password and aren't using AirPlay

If you see a password notification on your Apple TV and you aren't trying to use AirPlay, you may need to adjust your AirPlay settings.

On your Apple TV, go to Settings > AirPlay and HomeKit.

From here, you can give your Apple TV a unique name and assign it to a room so you can identify it easily when you use AirPlay. You can also choose who can stream content using AirPlay to your Apple TV:

• Everyone: anyone can see and stream content to your Apple TV.
• Anyone on the Same Network: anyone connected to your home Wi-Fi network can stream content to your Apple TV.
• Only People Sharing This Home: people who you’ve invited to control your home in the Home app can stream content to your Apple TV.
• Require Password: a password will be required before anyone can stream content to your Apple TV.

If you choose this last option then you will see a generated password and/or be able to edit it. Anyone on the Same Network is the setting I use. If I give you access to my Wi-Fi then I'm also happy for you to control my Apple TV or HomePods.

tt2

On your Apple TV, go to Settings > AirPlay and HomeKit. Change the password, or change the AirPlay setting so that Anyone on the Same Network can connect without needing a password.

tt2

Try https://www.lg.com/us/support/help-library/lg-tv-how-do-i-setup-airplay-on-my-lg-tv--20153095979536.

tt2