Thanks for reaching out.
Which version of Lightroom are you using? Where are you searching for the filter options? Do you mean presets? If yes, follow these steps: Open Lightroom and go to Lightroom>Preferences. In the menu that opens, highlight the Presets tab and then select the "Show All Other Lightroom Presets" button. Double-click on the "Lightroom" highlighted folder and open the "Filter Presets" folder.
You can check these steps to download and use Lightroom Classic: https://helpx.adobe.com/lightroom-classic/get-started.html.
Let us know if it helps,