How to implement index search for the website?

Hello,
We have a plan to implement full text search in our website. In this case, our team has no prior experience on how to implement using Squidex data (earlier we did it with support plugin in other CMS). We need consolidated result from all schemas (like in the attachment from your website). Just try to treat like this as a beginner question. Kindly provide some support on how to achieve this. Thanks.