Hi @Decor ,
If my answer helped you do not foeget to mark it as accepted 
Thank you
Topic summary
A store owner wants to keep out-of-stock products visible while giving customers the ability to filter and view only in-stock items.
Solution provided:
- Use Shopify’s Search & Discovery app
- Add “Availability” as a filter option
- This enables customers to toggle between “In Stock” and “Out of Stock” views
Status: Resolved - the original poster confirmed the solution worked for their needs.