Good day,
I just want to ask if there’s a way that the filter menu will be shown after the customer searches a product using the search bar?. The built-in filter menu in the supply theme only shows if the client chooses a specific collection.
I hope there’s a way with the filter menu without using any third-party app.
Sorry you are facing this issue, it would be my pleasure to help you.
Welcome to the Shopify community! 
Thanks for your good question.
Please share your site URL,
I will check out the issue and provide you a solution here.
The website URL is the following https://hazmotorsport.co.uk/search?type=product&q=rs4
when using the search bar from the home page there is no filters/side menu on the search page. How can we get this activated. The theme we are using is supply.
thanks without the app can you try collection filter code may be work if doesn’t work can you use free app
What is collection filter code? can you go a little further explaining how to do this. Also any recommendations on free app ?