The common theme for many of the portfolio sites that I've looked at use a block/card format to display the different projects they've worked on.
When clicked on they take the user to a project page/case study that presents more information regarding the specific project.
Here are a few examples that could be useful for ideas:
https://weareadaptable.com/work/

https://wholedesignstudios.com/shopify-store-examples/

https://www.hangar.co/case-studies
