I'm sorry to hear you're having trouble finding your Spotify playlist on Sonos. Here are a few steps you can take to try to resolve this issue:

1. Check your Spotify account: Make sure that your Spotify account is linked to your Sonos system. You can do this in the Sonos app by going to Settings > Services & Voice > Spotify (under Music & Content) > Reauthorize Account.

2. Update your Sonos system: Make sure your Sonos system is up to date. You can check for updates in the Sonos app by going to Settings > System > System Updates > Check for Updates.

3. Refresh your music library: In the Sonos app, go to Settings > System > Music Library > Update Music Index.

4. Restart your Sonos system: Sometimes, a simple restart can resolve issues. Unplug your Sonos products for about 10 seconds, then plug them back in. Wait for your system to restart.

5. Re-add Spotify to Sonos: If none of the above steps work, you might want to try removing Spotify from your Sonos system and then adding it back. To do this, go to Settings > Services & Voice > Spotify (under Music & Content) > Remove Service. Then, add Spotify back to your Sonos system by going to Settings > Services & Voice > Add a Service.

If you continue to have issues after trying these steps, it may be best to reach out to Sonos Support for further assistance.