We hope you don't mind us replying in English as it's the Community's official language.
You can find the songs you've hearted in Your Library > Music > Playlists > Liked Songs. Once you've headed over to your Liked Songs playlist, you should be able to listen to them on demand or shuffle them, if you'd prefer.
If you're still having troubles locating songs you've hearted or saved, we'd recommend logging out and back in your account to shake things up. If that doesn't do the trick, we'd suggest a quick reinstall of the app on your device. It'd be also helpful if you could include any screenshots of what's happening so we can take a closer look. Just make sure that they don't include any private or sensitive information.
Let us know how you get on :) We'll be right here if you need more help.
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"Kindness is the language which the deaf can hear and the blind can see." - Mark Twain