I can't join multiplayer in Minecraft on Switch

Here is a thread that might actually help with your issue: I can't join minecraft servers on nintendo switch - Microsoft Community

An organizer in an Xbox family group can manage settings for members who are in the family group.

Sign in to your Microsoft account.https://www.xbox.com/

Sign in at Xbox

Select your Gamertag, and then select the More actions button (…).

Select Xbox settings, and then select Privacy & online safety.

Note Because you’re accessing sensitive info, you may have to enter your password or passkey.

Select the Gamertag for the child account that you want to manage.

Select either the Xbox One/Windows 10 Online Safety tab or the Privacy tab.

Review the current settings and update any that you want to change, and then select Submit to save the changes.

Note You must select Submit at the bottom of the page before leaving or switching to another tab. If you don't submit the changes before you move to the other tab, your changes won't be saved.

Have the member sign in and then sign out of their account on the console to make sure the changes take effect.

as I am still an adolescent, that doesn't work and I think my parents have to allow it except we don't no how and when I hover over the multiplayer bar, it says ' multiplayer is disabled. please check your Microsoft account settings.'...

I'm Samy an independent advisor. Welcome to the community. How are you?

Have you accessed your account's privacy page and set your multiplayer settings to allowed? After you click submit to save the changes? And what error message do you get exactly?

Hi! My name is Pam. I'm an Independent Advisor and I'll be glad to help you today.

What error message are you getting?