Add portfolio from another theme to my theme

Hi! I like this portfolio https://themewich.com/previews/?product=aware but I already have another theme on my website. I was wondering if I can “merge” the two themes, or if there’s a plugin similar to that portfolio.
What I like about it is that is in one page, and when you click each image on the grid you can see other pictures as well as text.
Thank you!