Hi @JuleMauseSchlau !

 You need  convert an existing Family profile into an independent account .

I think when you change this ,then your favorites will be there .

Link below maybe can help you 

https://support.deezer.com/hc/en-gb/articles/360007641517-Join-And-Use-Deezer-Family-With-An-Independent-Account

I dont know which device you use !?

How to convert an existing Family profile into an independent account

for iOS Android

1. When you are logged in with your profile, go to Settings 
2. Select Add an email address and password
3. Enter an email address and password for your account

Alternatively, if you are the admin and want to convert another profile:

1. When you are logged in with the admin profile, go to Settings 
2. Select Family Members
3. Select the three dots  menu next to the profile you want to convert
4. Select Convert this profile into an independent account
5. Enter an email address and password for the account

Note: When the account admin has converted a profile into an independent account, the owner of that independent account will be logged out. They will need to use the credentials entered by the admin to log back in

Warning: You are able to convert profiles into independent accounts even if the Family account no longer has an active subscription. If this happens, the owner of the independent account will no longer be part of the Family account. They will have their own credentials as a Deezer Free account

for Desktop

1. Within the Members page, select the profile that you want to convert into an independent account
2. Go to the profile for that account
3. Select Account settings
4. Within the My Information tab, select Set as independent account
5. Choose whether you would like to connect with Facebook or connect with Google
6. Enter your Facebook or Google password

   Note: If you're already logged in, it may not be necessary to enter your password. If the email address attached to the Facebook or Google account is already in use, an error message will be displayed, and you'll need to delete the existing Deezer account associated with this email or enter a different email

   Once linked, you'll automatically be logged out from the Admin account and logged into your independent account

Tip: Remember to log out and log back in again on all devices with your Facebook or Google credentials

Thank you so much